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Protestantism: the 1517 Reformation, the five solas, the major branches and more than a century in Vietnam

Sola Scriptura Latin · The Protestant churches, Reformation Christianity, in Vietnamese Tin Lành, Cải Chánh Giáo, Kháng Cách, Thệ Phản

A religion usually spoken of in the singular that is really plural, because Protestantism is not one church with a head but a whole spectrum of churches that share the same Reformation root and each govern themselves.

Founded
31 October 1517
The date Martin Luther made public his ninety-five theses in Wittenberg. How exactly he made them public is still debated by historians
Region of origin
Wittenberg, Saxony
Today Lutherstadt Wittenberg, in the state of Saxony-Anhalt, Germany
Followers
About 600 million to more than one billion, depending on classification
Source: Pew Research Center counts 801 million under a broad definition that includes Anglicans and independent churches, while the Center for the Study of Global Christianity at Gordon Conwell counts 628.9 million and lists 409.4 million members of independent churches separately, Pew figures for 2010, published in 2011. Gordon Conwell figures for mid-2025. Vietnam more than 1.2 million according to a 2023 document of the Ban Tôn giáo Chính phủ (the Government Committee for Religious Affairs)

IA quick read in five sentences

There is a slip that happens at the very first question, and unless it is cleared up first, this whole page will be misread. Vietnamese readers tend to ask who heads Protestantism and where the Protestant headquarters is, because they are used to picturing a church with a clear hierarchy. But Protestantism is not built that way. It is not one organisation, but the common name for a very wide spectrum of churches that all came out of the Reformation in sixteenth-century Europe. Each body governs itself, sets its own rules and elects its own leaders, and no body has authority over any other.

To put it in a picture: Catholicism is one tree with one root and one trunk, while Protestantism is a forest of trees grown from the same patch of ground, sharing a core set of beliefs and one Bible, but differing in ritual and in organisation.

One. Protestantism is one of the three great blocks of Christianity, alongside Catholicism and Orthodox Christianity. It professes one God in the Holy Trinity and believes that Jesus Christ is the Son of God made man. Two. This block came out of the Reformation that began on 31 October 1517 in Wittenberg, when the monk and professor of theology Martin Luther made public his ninety-five theses. Three. What is distinctive about Protestantism is packed into the five solas, five statements of "only", together with the priesthood of all believers, meaning that there is no necessary class of intermediaries between human beings and God. Four. Most branches keep two sacraments, baptism and the Lord's Supper, unlike the seven of Catholicism, and their churches take the pulpit rather than the altar as their centre. Five. In Vietnam, the religion has been present since 1911 in Đà Nẵng, and today has more than one million two hundred thousand followers in eleven recognised organisations.

This page follows fifteen sections. The library's way of writing is to report, not to adjudicate. What the Protestant churches teach is written in one voice, what historians can verify is written in another, and the two are placed side by side for you to compare. On the sixteenth-century separation in particular, the library records the events and the arguments of each side, without attributing motives to anyone. Wherever two sources disagree, both are written into the text with the name of the source.

IIEurope before 1517

A great event rarely erupts out of nothing. Before Luther wrote his first thesis, Europe already had several conditions in place, and without any one of them the story might well have ended in a university meeting room.

Movable-type printing

Johannes Gutenberg brought movable-type printing into use in Mainz around the middle of the fifteenth century. Before that, a text could spread only if someone copied it by hand. Afterwards, a printed sheet could be multiplied into thousands of copies within a few days.

Humanism and the call to return to the sources

Renaissance scholars set the principle of going back to the original texts instead of reading through layers of later commentary. In 1516, Erasmus of Rotterdam published a Greek New Testament with a parallel text, a tool the previous generation did not have.

Earlier voices of reform

John Wycliffe in England, who died in 1384, advocated putting the Bible into English. Jan Hus in Bohemia was burned in 1415 after the Council of Constance. The two are often described as forerunners of Luther by a full century.

The matter of indulgences

In Catholic teaching, an indulgence is the remission of the temporal punishment due to sins already forgiven. In the early sixteenth century, the preaching of indulgences was tied to fundraising campaigns, including one for the building of Saint Peter's Basilica in Rome, and the way they were preached in some parts of Germany was what Luther took aim at.

A Germany of many princes

The Holy Roman Empire was made up of hundreds of territories, with prince electors who held real power. A monk condemned by the Empire could still be protected by an elector, and that is what happened.

Listing these conditions is not meant to say that the Church of that time was corrupt and therefore bound to break apart. Catholicism itself had movements of reform from within, both before and after 1517, and the great renewal of that block was the Council of Trent, which met in three periods from 1545 to 1563. The library records only that in the same period, Western Europe went down two paths.

IIIMartin Luther and 31 October 1517

Martin Luther was born on 10 November 1483 in Eisleben and died on 18 February 1546, also in Eisleben. He entered the Augustinian order, was ordained a priest, earned a doctorate in theology and taught the Bible at the University of Wittenberg. In other words, the man who set off the Reformation was not an outsider, but a monk and a professor of that very Church.

According to the tradition

What Luther said he found when reading the Letter to the Romans, chapter 1, verse 17, is the starting point of everything that followed. As he presented it, a human being cannot make himself righteous before God through merit or through ritual. That righteousness is something God gives, and the human being receives it through faith. From this point came both the five solas and the teaching of the priesthood of all believers.

The ninety-five theses bear the title Disputatio pro declaratione virtutis indulgentiarum, a disputation on the power of indulgences, written in Latin in the standard form of a university disputation. Most of the theses discuss how far indulgences are effective, what the indulgence preachers claimed beyond what was warranted, and how the money collected was used. The opening thesis says that the whole life of the believer should be one of repentance.

According to the historical record

The view that the nailing did not happen. In 1961, the Catholic church historian Erwin Iserloh argued that the theses were never posted on the door, that Luther only sent them as an open letter to his superiors asking for a disputation, and that he made them public more widely only later, when no reply came. The scholar Andrew Pettegree holds that the familiar image is very unlikely to have happened just as the paintings show it, and that if it did, the university custom of the day was to paste notices up, not nail them. Peter Marshall holds that there are grounds to say the theses were never posted, and that the story took shape around the centenary in 1617. All three note one point in common: Luther himself never told the story.

The view that the theses were posted. In 1546, Philipp Melanchthon wrote in the preface to a collection of Luther's works that Luther had publicly posted the theses at the church next to the castle on the eve of All Saints' Day 1517, but Melanchthon only came to Wittenberg in 1518 and so was not there. In 2006, Martin Treu found in the Jena University Library a note written in 1540 by Georg Rörer, Luther's assistant, saying that Luther had posted the theses on the doors of the churches in Wittenberg. This is regarded as the earliest evidence, but Rörer was not an eyewitness either.

What neither side disputes: on 31 October 1517 Luther sent the theses with a letter to his ecclesiastical superiors, and within a few weeks the text had been reprinted and had spread throughout Germany.

In April 1521, Luther was summoned to the imperial Diet at Worms and asked to recant his writings. He refused, with words that all the records contain: his conscience was bound by the Word of God, so he could not and would not recant. The more famous line, Hier stehe ich, ich kann nicht anders, "here I stand, I can do no other", is another point of debate, because some contemporary records contain it and others do not. After Worms, Luther was placed under the imperial ban, and the Elector of Saxony had him taken into hiding at Wartburg Castle, where he translated the New Testament into German in about eleven weeks.

A common misunderstanding

One, he did not give the religion its name. The word Lutheran was at first used by others to label his party, and he himself once said that believers should call themselves Christians rather than bear the name of a man. Two, in 1517 he had no intention of founding a new church. The separation took shape gradually over more than a decade afterwards. Three, the Protestant churches do not worship Luther. There is no altar to Luther, no statue of Luther to pray to, and no prayer addressed to him.

IVFive hundred years on a timeline

Three kinds of event recur across those five hundred years. The first is the confessions of faith, documents that a body of churches writes to state clearly what it believes. The second is the translations of the Bible into the languages of the people. The third is the birth of new branches. Some dates below are conventional, meaning that later generations chose one day to mark a whole long process.

  • mid-15th centuryMovable-type printing in Mainz
    Gutenberg brought movable-type printing into use. This was the material condition that turned a university disputation into a Europe-wide event within a few weeks.
  • 31 October 1517The ninety-five theses
    Martin Luther made public his disputation on indulgences in Wittenberg. This day later became Reformation Day, a feast day for most Protestant churches.
  • 1519Zwingli preaches in Zurich
    Huldrych Zwingli took up the preaching post at the Grossmünster and preached through the books of the Bible one after another. The beginning of the Swiss Reformed branch, independent of Luther.
  • 1521The Diet of Worms
    Luther refused to recant his writings, was excommunicated and placed under the imperial ban, and was then taken into hiding at Wartburg Castle.
  • 1522The German New Testament
    Luther's translation of the New Testament came out in September and sold out very quickly. His complete German Bible was printed in 1534.
  • 21 January 1525The first adult baptism
    In Zurich, a small group baptised one another on the basis of a personal confession of faith, with Conrad Grebel baptising George Blaurock. The founding date of the Anabaptist movement.
  • 1530The Augsburg Confession
    A document drafted by Melanchthon and presented to the imperial Diet at Augsburg. It remains the foundational confession of the Lutheran churches today.
  • 1536Calvin's Institutes
    Jean Calvin published the Institutio Christianae Religionis, the work that systematised Reformed theology, and then bound his life to the city of Geneva.
  • 1534The Act of Supremacy in England
    The English Parliament made the king the supreme head of the Church of England. The legal starting point of Anglicanism, a path quite different from that of Luther or Calvin.
  • 1609The first Baptist church
    John Smyth formed a congregation in Amsterdam on the principle of baptising only those who confess faith for themselves. Three years later Thomas Helwys brought this branch to London.
  • 1738The beginning of the Methodist movement
    John Wesley described an experience that changed his faith on 24 May in Aldersgate Street, London. The movement became a separate church after his death in 1791.
  • 1906The Azusa Street Revival
    From a chapel in Los Angeles, the Pentecostal movement spread across the world and became the fastest-growing branch of the twentieth century.
  • 1911Protestantism reaches Đà Nẵng
    Missionaries of the Christian and Missionary Alliance set up the first mission station in Tourane, today Đà Nẵng.

VCore teachings

Because Protestantism is plural, there is no single catechism for the whole block. Each tradition has its own confession: the Lutheran churches have the Augsburg Confession of 1530, the Reformed churches have the Heidelberg Catechism of 1563 and the Westminster Confession of Faith of 1646, and the Church of England has the Thirty-Nine Articles. Even so, there is a common core that almost every branch accepts.

First, what is shared with all of Christianity

Most of what Protestants believe, Catholics and Orthodox Christians believe as well, and this is often overlooked. The mainline Protestant churches accept the Nicene Creed, formed at the two councils of 325 and 381. They profess one God in three Persons, Father, Son and Holy Spirit, believe that Jesus Christ is both true God and true man, and believe that he was crucified, rose on the third day and will come again. Where Protestantism differs from Catholicism is in authority, in how human beings are saved and in how the church is organised.

The five solas

Sola in Latin means alone, only. A note on origins is needed: the sixteenth-century Reformers used each phrase separately, and gathering exactly these five into a named set is a summary made by later generations. The content is old, but the five-part frame is new.

Sola scriptura, Scripture alone

The Bible is the final standard for what must be believed and how one must live. Tradition, councils and the teaching of the church all stand beneath that standard. This is a fundamental difference from Catholicism, which accepts two sources, Scripture and Sacred Tradition.

Sola fide, faith alone

A human being is counted righteous before God through faith, not through merit. Good works are the fruit of faith, not the price paid to buy salvation. The Catholic side presents it differently: salvation comes by grace, and that grace calls for a human response of both faith and life. The library records the position of each side as each side states it.

Sola gratia, grace alone

Being saved is entirely a gift that comes from the goodness of God. The Vietnamese Protestant word for grace, ân điển, corresponds to the word ân sủng used by Vietnamese Catholics.

Solus Christus, Christ alone

Jesus Christ is the only mediator between God and humanity. From this it follows that the Protestant churches do not pray to the saints and do not accept the intercessory role of Mary, though they still hold her in respect.

Soli Deo gloria, glory to God alone

Everything is directed to the glory of God, not credited to the merit of any person. These are the words Johann Sebastian Bach habitually abbreviated at the end of his scores.

The priesthood of all believers

This is the idea that changed the whole shape of the church, and it is what Vietnamese readers used to a hierarchy find strangest. Drawing on the First Letter of Peter, chapter 2, verse 9, which speaks of a priestly people, the Reformers held that every baptised believer can come directly to God, without needing an ordained intermediary. The consequences reach a long way. One, the pastor is not a separate sacred rank but an office in the church, called by the church and able to leave that office. Two, pastors marry like anyone else, and Luther himself married Katharina von Bora in 1525. Three, there is no private confession to an ordained person as a required sacrament. Four, lay members sit on the decision-making bodies of the church.

A common misunderstanding

Saying that every believer is a priest does not mean that the church needs no trained people, or that anyone who wants to preach may preach. Protestant churches all have Bible schools, theological seminaries, ordination procedures and rules about who may administer baptism and the Lord's Supper. What was dropped is the notion that ordained people belong to a different order by nature.

Names and vocabulary

Many misunderstandings between Vietnamese people on the two sides are really just misunderstandings about words. Vietnamese Protestants call God Đức Chúa Trời, the Holy Spirit Đức Thánh Linh, the shepherd of the flock mục sư (pastor), and the gathering giờ thờ phượng (the hour of worship). Vietnamese Catholics say, respectively, Thiên Chúa, Chúa Thánh Thần, linh mục (priest) and Thánh Lễ (Mass). Proper names also follow different transliterations: Protestants write Giê-xu, Phao-lô, Phi-e-rơ, while Catholics write Giêsu, Phaolô, Phêrô, for Jesus, Paul and Peter. The name Tin Lành itself is the Vietnamese translation of the word Gospel, literally good news.

VIThe sixty-six books of the Bible and the role of the printing press

If one object had to be chosen to stand for the whole Protestant block, it would be the Bible in each person's hands. Not a book placed on the altar for the ordained to read, but a cheap printed book, in one's mother tongue, that could be taken home. In the sixteenth century this was a very great change, and it was possible only because translation and the printing press went together.

Sixty-six books, and the gap with Catholicism

A little-known detail: Luther's German Bible printed in 1534 still contained those seven books, but placed them in a separate section at the end of the Old Testament, with a preface saying that they are useful to read but not equal to the other books.
PartProtestant BibleCatholic BibleNote
Old Testament39 books46 booksThe Protestant Bible follows the Hebrew list of the Jewish tradition. The Catholic Bible follows the Greek translation known as the Septuagint.
New Testament27 books27 booksThe two are completely identical, without a single book of difference.
Total66 books73 booksA difference of seven books, all in the Old Testament.
The seven books in questionCalled the Apocrypha, or books outside the canonCalled the deuterocanonical booksTobit, Judith, Wisdom, Sirach, Baruch and the two books of Maccabees, named as the Catholic side names them.

Bringing the Bible into the people's language

Before the Reformation, the standard text in the West was the Latin Vulgate, which the unschooled could not read. The principle of Scripture alone only makes sense if ordinary people can read Scripture, so translation became a necessity.

Luther translated the New Testament at the Wartburg and had it printed in September 1522, and the complete German Bible came out in 1534. He translated according to how Germans actually spoke rather than clinging to each word, and many scholars regard his version as one of the foundations of modern written German. In England, William Tyndale translated the New Testament from the original Greek and had it printed in 1526. He was executed in 1536, and much of his wording later passed directly into the King James Version of 1611.

According to the historical record

The Reformation was the first great event in European history to unfold within a market for printed books. The ninety-five theses were written for scholars, but within a few weeks printers in several cities had reprinted and sold them. Luther then turned to writing short pamphlets in German, cheap, brief and quick to print, and that genre became the main vehicle of the whole debate. The opposing side used the very same vehicle to respond.

The Bible in Vietnamese

The first complete Bible in Vietnamese is closely tied to the Protestant churches and was the work of many people. According to material from Thư viện Tin Lành (the Protestant Library), the translation team included William Cadman and his wife Grace Hazenberg Cadman, the missionary John Olsen, the writer Phan Khôi and Trần Văn Dõng, under the sponsorship of the British and Foreign Bible Society. Phan Khôi's share is reckoned at about 342 pages out of a total of 1,397.

On the dating, two accounts circulate side by side, and the library records both. That material states that the translation was completed in 1924, first printed in 1925 in Shanghai, and printed in Hà Nội in 1926. Meanwhile, the name still in common use in the churches today is Bản Truyền Thống 1926 (the Traditional Version of 1926).

A common misunderstanding

Sola scriptura says that Scripture is the final standard, that is, when there is a dispute, one must return to it to decide. It does not say that all readings are equal, nor that the church needs no teachers. The evidence lies in practice: the Protestant branches all have confessions of faith, catechisms and theological schools.

VIIWorship, baptism and the Lord's Supper

Someone used to Catholic Mass who walks into a Protestant service will notice a difference at once. Here there is no common liturgical form for the whole block. Each church sets its own order of service, and what stands at the centre of the service is the sermon, usually long and usually following a particular passage of Scripture. Around the sermon come singing by the whole congregation, not just the choir, prayers that are sometimes written in advance and sometimes spontaneous, the reading of Scripture aloud, the offering, and a closing benediction. Luther wrote hymns in German for the people to sing, the best known being Ein feste Burg ist unser Gott, while the Reformed tradition is known for singing the Psalms.

Two sacraments instead of seven

This is one of the most visible differences from Catholicism. Most Protestant branches keep two, baptism and the Lord's Supper, arguing that only these two carry an explicit command from Jesus himself in the Gospels. The other five of the seven Catholic sacraments are still practised, but classed as rites of the church: weddings, funerals, ordinations, the dedication of children, prayer for the sick, private confession. Many Vietnamese-language Protestant churches call the two thánh lễ (holy rites), and some branches call them lễ nghi (ordinances) to avoid implying that the rite confers grace by itself.

Baptism for whom

This is the oldest dividing line within Protestantism. The Lutheran, Reformed, Anglican and Methodist churches baptise infants, usually by pouring water on the head, arguing that baptism is the sign of a covenant God establishes before the human being responds. The Anabaptist, Baptist, Pentecostal churches and many independent churches baptise only those old enough to confess faith for themselves, usually by immersing the whole person in water. The very word Anabaptist means one who baptises again, a name given by their opponents.

The Lord's Supper, and four understandings

Four presentations, recorded in each tradition's own words, and a subject of debate since the Marburg Colloquy of 1529 between Luther and Zwingli.
TraditionHow the presence of Christ is presented
LutheranChrist is truly present, with and under the bread and wine, but the bread remains bread. The Lutheran side distinguishes this from the Catholic doctrine of transubstantiation.
Reformed, following CalvinChrist is truly present but in a spiritual way, and the believer receives him by faith through the work of the Holy Spirit, not with the mouth.
Zwingli and the memorial branchesThe bread and the cup are signs commemorating what Christ has done. The value of the rite lies in the congregation remembering and confessing together.
AnglicanThe Thirty-Nine Articles reject transubstantiation, while in practice there are both understandings close to Calvin and understandings that emphasise the presence, depending on the school.

In frequency, practice varies widely. Some Lutheran and Anglican churches celebrate it every week, while some Reformed and Baptist churches celebrate it once a month or once a quarter. As for the calendar, almost every branch keeps Christmas, Holy Week and Easter, while Reformation Day on 31 October belongs to this block alone. Advent and Lent are kept by the Lutheran and Anglican churches, while many other churches do not follow a liturgical calendar.

VIIIThe major branches

The table below lists the major branches in the order in which they appeared, and it should be read with one caution: these are families of churches, not organisations. Within the Baptist family there are dozens of conventions that do not belong to one another, and within the Pentecostal family there are even more. And there are churches that fit neatly into no box, especially the layer of independent churches founded in the twentieth century.

The years are conventional markers, used to mark a long process rather than a founding day backed by a document.
BranchOriginsEasily recognised differences
LutheranGermany and Scandinavia, from 1517, with the Augsburg Confession of 1530 as its foundational confessionKeeps many older liturgical rites and vestments, and in some places keeps bishops. Stresses justification by faith and the real presence in the Lord's Supper.
Reformed, including the Zwingli line in Zurich and the Calvin line in GenevaSwitzerland from 1519 and 1536, spreading to the Netherlands, Scotland, Hungary and FranceRemoved more rituals and images than the Lutheran branch. Organised through councils of elders, hence called Presbyterian in many countries. Stresses the sovereignty of God.
AnglicanEngland, with a legal starting point in 1534, stabilised with the settlement of 1559Keeps bishops, keeps the liturgy of the Book of Common Prayer, and keeps many outward features of the older Church. Sees itself in a middle position, see the separate section below.
AnabaptistZurich from 21 January 1525, later spreading to the Netherlands and Moravia, then to North AmericaBaptises only those who confess faith for themselves. Holds that the church should be separate from the state, and mostly follows the path of nonviolence. Descendants include the Mennonites, the Amish and the Hutterites.
BaptistAmsterdam in 1609 with John Smyth, to London in 1612 with Thomas HelwysBaptism of believers by immersion. Each local church is fully self-governing, and conventions are only voluntary associations. The largest church family in the United States.
MethodistEngland from 1738 with John Wesley, a separate church after 1791Born from a movement within Anglicanism, stressing holiness in daily life and organisation into small groups.
PentecostalThe United States in the early 20th century, the usual marker being the Azusa Street Revival of 1906Stresses that the gifts of the Holy Spirit are still active today, including speaking in tongues, healing and prophecy. Strongest in Latin America and Africa.
EvangelicalNot a denomination but a movement across branches, with the Lausanne Covenant of 1974 as its founding documentStresses four things: the authority of Scripture, personal conversion, the centrality of the cross, and the duty to evangelise. Its followers are present in almost all the branches above.

The two Reformed lines need to be set apart a little further, since the table joins them for brevity. Huldrych Zwingli began his work in Zurich in 1519, a full generation before Calvin, and died in battle in 1531 in the conflict at Kappel. Jean Calvin was French, published the Institutio Christianae Religionis in 1536 at just twenty-seven, and then bound most of his life to the city of Geneva. The two differed most clearly in their understanding of the Lord's Supper.

IXAnglicanism, the hardest case to classify

This library places Canterbury Cathedral and Westminster Abbey under Protestantism. That choice needs to be explained at once, because it is a choice made for tidiness, not a verdict, and most Anglicans themselves would not describe themselves in exactly that way.

Historically, Anglicanism is indeed a product of the sixteenth century. It broke from the authority of Rome through the Act of Supremacy of 1534 and took shape through the Elizabethan Settlement of 1559, with the Thirty-Nine Articles and the Book of Common Prayer. Classifications of world religions usually place Anglicanism within the Protestant block, and Pew Research Center states plainly that its Protestant figure includes Anglicans.

But in its self-understanding, Anglicanism stands somewhere else. A familiar phrase among Anglicans is both Catholic and Reformed, and they present this not as a half-hearted compromise but as a deliberate position, commonly called by the Latin via media, the middle way. They keep bishops in the line of apostolic succession and keep the liturgy, while accepting Scripture as the final authority and accepting the priesthood of all believers.

Scale

According to documents of the Lambeth Conference, the Anglican Communion comprises 42 member churches present in more than 165 countries, with an estimated 85 million members.

The Archbishop of Canterbury

Described as the focus of Anglican unity and the one who presides over the common structures, not someone with jurisdiction over the member churches. This is a fundamental difference from the role of the Pope.

Schools within

Within Anglicanism there is a school that leans towards ritual, commonly called High Church, and a school that leans towards preaching and Scripture, commonly called Low Church or Evangelical. The two schools live within the same church.

Why the library still places it under Protestantism

Because the library divides religions by major blocks, and in the common classification used by scholars of religion, Anglicanism sits within the block of churches that came out of the Reformation. This is a classification for tidiness, not a statement about identity.

A common misunderstanding

Some Anglicans say they are Protestant. Some Anglicans say they are not Protestant but reformed Catholics. Both ways of speaking have grounds in Anglicanism's own history and texts, and the library does not judge who is right. When you see Canterbury and Westminster placed under Protestantism on this page, please understand that as the library's convention of arrangement.

XStructure, or why there is no single head

The most common question a Vietnamese person asks on hearing about Protestantism is who heads it. The honest answer: no one, and that is not a shortcoming but a direct consequence of the teaching. If Scripture is the final standard and every believer can come directly to God, there is no room for a single living authority standing over the whole block. Instead, Protestant churches are organised in three ways.

Episcopal government

A rank of bishops oversees each territory. Anglicanism follows this pattern, as do the Lutheran churches of Scandinavia and some Methodist churches. A bishop has authority to govern within that church, but no one is bishop of the bishops for the whole world.

Presbyterian government

Authority lies with councils of pastors and elders elected by the members, from the local church up to the national council. The Reformed and Presbyterian churches follow this pattern, deciding by vote.

Congregational government

Each local church is a fully self-governing unit, calling its own pastor and deciding all its own affairs. Baptists, many Pentecostal churches and most independent churches follow this pattern.

As for ministers, every branch has pastors, people trained and ordained to preach and to care for the church. Pastors marry like anyone else, and in many branches today there are also women pastors, though on this point the branches do not agree. A notable common feature is that lay members take part in decisions, through church boards, boards of deacons or general assemblies.

So is there any organisation that links the churches together? There is, but these bodies are forums, not superiors. The World Council of Churches, founded in 1948 in Amsterdam, gathers hundreds of Protestant and Orthodox churches. The Lutheran World Federation, the Anglican Communion, the World Communion of Reformed Churches and the Baptist World Alliance each gather one family of churches. None of them can give orders to its member churches, and a church may withdraw at any time.

A common misunderstanding

The answer of the Protestant churches themselves is: by texts, not by machinery. What holds the branches together is the same Bible, the same ancient creeds, a shared store of hymns and a tradition of preaching. The price paid is a great number of branches, and splits that happen more easily.

XIProtestant churches and the empty cross

Standing in the middle of a Protestant church, the first thing that strikes the eye is the emptiness. No statues of saints along both sides, no dense array of paintings, no tabernacle, no rows of candles before side altars. Many churches have whitewashed walls and clear glass windows that let the light fall straight in. Someone unfamiliar with this may easily think the congregation lacked money or had not finished building. In fact this is a theological intention dating from the sixteenth century.

The pulpit at the centre

The raised, central position that in a Catholic church belongs to the altar is here usually occupied by the pulpit. The arrangement states plainly that the centre of the service is the Word preached.

A communion table, not an altar

Usually a low table placed in front of the pulpit, sometimes carved with the words about doing this in remembrance of the Lord. The word used is also different, because in Protestant teaching the sacrifice was completed once and for all.

The empty cross

The cross in a Protestant church usually carries no figure of the crucified Christ. The usual explanation is that the empty cross emphasises the resurrection and the empty tomb, not that the Passion is taken lightly. This is also the symbol the library has chosen for this page.

No statues to pray before

There are no statues of saints set up for believers to pray before, and no relics. Some churches still have stained glass or reliefs of a decorative kind, to a degree that varies by branch and by country.

One caution is needed when visiting the places in this library. Canterbury Cathedral, founded in 597, and Westminster Abbey, with roots going back to around 960, were both built when England still belonged to the Church of Rome, so the Gothic architecture, the tombs and the reliefs there are a pre-Reformation heritage that Anglicanism kept, not the model of a newly built Protestant church. By contrast, the Westerkerk in Amsterdam, built between 1620 and 1631 to a design by Hendrick de Keyser, was designed from the outset for a Reformed congregation.

XIINumber of adherents, and why the figures differ so widely

With Protestantism, the difficulty of counting lies not in a lack of data but in the lack of agreement on whom to count. In the same year, two reputable research organisations can give two figures that differ by more than two hundred million people, simply because they draw the boundaries differently.

Four things that skew the count

Whether Anglicans are included

About 85 million people, according to documents of the Lambeth Conference. Some tables place Anglicanism in the Protestant block, some list it separately, and this choice alone moves the figure up a whole step.

Whether independent churches are included

This is the largest source of difference. Churches that belong to no denomination, including many African indigenous churches, house churches in Asia and nondenominational churches in North America, are merged into Protestantism by some tables and listed separately by others. That group numbers more than four hundred million people.

No central register

No organisation keeps the register for the whole block. Each church counts by its own standard. Some count the baptised, some count regular attenders.

Self-identification versus practice

In many surveys in Europe, the number of people who record themselves as belonging to a Protestant church is far larger than the number who actually attend, because membership in many countries is tied to administrative procedures.

Three sources, three classifications, so the figures cannot be compared directly. According to the same Gordon Conwell 2025 table, the total number of Christians is 2,645,317,000, of whom 1,272,775,000 are Catholic. Source: Pew Research Center, Global Christianity report of 19 December 2011 and report of 9 June 2025. Gordon Conwell, Status of Global Christianity 2025 table. Ban Tôn giáo Chính phủ (the Government Committee for Religious Affairs), 2023 edition of its document..
Scope and sourceFigureData yearClassification
Worldwide, Pew Research Center801 million, 37 percent of all Christians2010 baseline, published 2011Broad definition, merging both Anglicans and independent churches into the Protestant block.
Worldwide, Gordon Conwell628,862,000 peoplemid-2025This table merges Anglicans into Protestantism but lists the independent churches separately.
Worldwide, independent churches, Gordon Conwell409,425,000 peoplemid-2025A separate group. Adding the two rows above gives more than one billion.
Worldwide, all Christians, Pew2.3 billion people, 28.8 percent of the world population2020 baseline, published 2025This report does not break the figure down by denomination, counting all Christians as one group.
Vietnam, Ban Tôn giáo Chính phủMore than 1.2 million followers, more than 2,300 clergy, nearly 900 places of worship2023 edition of the documentCounted across the eleven recognised Protestant organisations.

A few conclusions. First, the most accurate figure the library can give is a range: from about six hundred million to more than one billion, depending on whether the independent churches are included. Second, by church family, Protestantism is the second largest block of Christianity after Catholicism, but this block has no single organisation that could be set beside the other for comparison. Third, the strongest growth over the past century has been in sub-Saharan Africa, Latin America and East Asia, no longer in Europe.

XIIIProtestantism in Vietnam

Compared with Catholicism, which has been present on Vietnamese soil since the sixteenth century, Protestantism arrived about four hundred years later. The starting date used both by scholars and by the churches themselves is 1911, and the cradle is Đà Nẵng.

1911 in Tourane

According to material from the Evangelical Church of Vietnam, on 22 May 1911 the missionary R.A. Jaffray, together with two other missionaries, Paul M. Hosler and G. Lloyd Hughes, left Hong Kong by ship, and on 25 May 1911 the three arrived in Tourane, today Đà Nẵng. They bought two plots of land numbered 66 and 67 to serve as the first mission station of the Christian and Missionary Alliance, known in Vietnamese as Hội Truyền giáo Phúc Âm Liên hiệp and commonly abbreviated CMA. There had been scouting journeys before this. The same source records that Jaffray reached the north by way of Lạng Sơn as early as 1898, but a permanent station came only in 1911.

From scattered churches to one organisation

In 1927, the first general assembly met in Đà Nẵng and set up a common organisation for the existing churches. Its name at the time is often recorded as Hội Tin Lành Đông Pháp (the Evangelical Church of French Indochina), and it later became the Evangelical Church of Vietnam (Hội thánh Tin Lành Việt Nam).

On how the organisation came to be two, the sources differ, and the library records both accounts. Some domestic research documents place the split in the mid-1950s, after the Geneva Accords of 1954. Another account, common in church life, ties the formation of the two organisations named North and South to the period after 1975. What both accounts accept: today these are two separate organisations, each with its own charter, its own executive board and its own general assembly.

The two largest organisations

The two rows of figures come from two different dates, so they cannot be compared directly. Source: Ban Tôn giáo Chính phủ, 2023 edition of its document. News report on the 37th General Assembly of the General Council of the northern organisation, April 2026. Vietnam News Agency report on the 48th General Assembly of the General Confederation of the southern organisation, July 2022..
OrganisationYear of recognitionMembers and congregationsHeadquarters
Evangelical Church of Vietnam (North)1958 according to documents of the Ban Tôn giáo Chính phủ. Some English-language documents give 1963.1,415 churches and meeting points, 220,000 members, nearly 1,000 clergy, according to figures announced at the April 2026 assemblyHà Nội Protestant Church, Ngõ Trạm street, Hàng Bông ward, Hà Nội
Evangelical Church of Vietnam (South)3 April 2001More than 700,000 members, nearly 600 congregations, 1,500 meeting points, across 34 provinces and cities, according to figures announced at the July 2022 assembly155 Trần Hưng Đạo, Cầu Ông Lãnh ward, Hồ Chí Minh City

Eleven recognised organisations

The list and the years follow the source document exactly. For the two organisations listed with 2018, the source records the grant of a certificate of registration for religious activities, which differs from the organisations recorded as recognised. Source: Ban Tôn giáo Chính phủ, the document Tôn giáo và chính sách tôn giáo ở Việt Nam (Religion and Religious Policy in Vietnam), 2023 edition..
OrganisationYear
Evangelical Church of Vietnam, North (Hội thánh Tin Lành Việt Nam miền Bắc)1958
Evangelical Church of Vietnam, South (Hội thánh Tin Lành Việt Nam miền Nam)2001
Vietnam Christian Mission Association (Hội Truyền giáo Cơ đốc Việt Nam)2007
Vietnam Baptist Convention (Tổng hội Báp-tít Việt Nam)2008
Baptist Church of Vietnam (Giáo hội Báp-tít Việt Nam)2008
Presbyterian Church of Vietnam (Hội thánh Tin Lành Trưởng lão Việt Nam)2008
Mennonite Church of Vietnam (Hội thánh Men-nô-nai Việt Nam)2009
Christian Fellowship Church of Vietnam (Hội thánh Liên hữu Cơ đốc Việt Nam)2010
Full Gospel Church of Vietnam (Hội thánh Phúc âm Toàn vẹn Việt Nam)2018
United Mission Evangelical Church of Vietnam (Hội thánh Tin Lành Liên hiệp Truyền giáo Việt Nam)2018
Pentecostal Gospel Church of Vietnam (Giáo hội Phúc âm Ngũ tuần Việt Nam)2019

A look at the list above shows the wide spectrum described at the start of this page repeated exactly on Vietnamese soil: there is a branch rooted in the CMA, a Baptist branch with two parallel organisations, a Presbyterian branch, a Mennonite branch, that is, descendants of the Anabaptists, and a Pentecostal branch. The 2023 document of the Ban Tôn giáo Chính phủ records more than 1.2 million Protestants nationwide, more than 2,300 clergy and nearly 900 places of worship.

Among the main places of worship, three are often mentioned. Đà Nẵng Protestant Church is tied to the first church, founded in 1911. Hà Nội Protestant Church on Ngõ Trạm street, which grew from a small chapel built around 1920 and was enlarged many times, is the headquarters of the northern organisation. The headquarters of the General Confederation of the southern organisation is at 155 Trần Hưng Đạo, Cầu Ông Lãnh ward, Hồ Chí Minh City. Beyond these, many mountain provinces of the north and the Central Highlands have networks of congregations and meeting points belonging to many different organisations.

XIVThrough the eyes of feng shui

This section needs a caveat first. Protestantism does not teach feng shui. Not one line in the Bible, in the Reformed confessions or in the charter of any Protestant church discusses choosing an orientation by one's birth year, reading the qi of the land or arranging feng shui objects. The library places this section here because this is the library of a person who works in the destiny arts, and readers familiar with Vietnamese traditional ways need a point of comparison. This is the library's reading, not the teaching of the religion, and no one should use this section to claim that Protestantism practises feng shui.

One more point must be made clear, because it distinguishes Protestantism from Catholicism even in matters of building. Ancient Christian tradition had the custom of orienting churches towards the east, signifying turning towards the risen Christ, and Catholicism kept that custom for a long time. Many Protestant branches, especially the Reformed branches, dropped this custom along with many other rites in the sixteenth century, arguing that the orientation of a building is not among the things Scripture teaches. As a result, the orientation of a Protestant church is largely decided by the plot of land and the street.

What takes the place of choosing an orientation

So when orientation is not chosen, what do builders plan for? The answer is quite practical. One, sightlines: every seat must be able to see the pulpit, so many churches use a nearly square floor plan instead of a long rectangle, and add galleries. Two, acoustics: before loudspeakers, having one person speak so that a thousand could hear clearly was a problem of ceilings, materials and distances. Three, light: clear glass replaced stained glass so that believers could read the Bibles in their hands. All three calculations spring from the same point of teaching: the Word preached stands at the centre.

Read through Vietnamese traditional eyes

If a Protestant church is placed within the frame of traditional feng shui, the following points would catch the attention of practitioners, and it bears repeating that this is the library's interpretation. The bright hall. Many Protestant churches have a wide, open forecourt, what the traditional approach calls the bright hall (minh đường), but that forecourt exists because a large congregation needs a place to gather. Water. The Westerkerk stands right beside the Prinsengracht canal, a configuration a geomancer would call sitting on solid ground and facing water (tọa thực hướng thủy), though the real reason is simpler: seventeenth-century Amsterdam was a city built on canals. Brightness and openness. Clear glass, white walls and high ceilings create the feeling that the traditional approach calls a bright qi field. This is where the two ways of seeing meet, because both value brightness and openness, only for different reasons.

A common misunderstanding

If you are a Protestant, this page does not advise you to consult feng shui, and the right authority to ask about that is the pastor of your own church, not a library page. If you have no religion and are standing before a Protestant church that looks too bare compared with a Catholic church, please do not think the congregation lacked money or left it unfinished. That bareness is intentional, rooted in a sixteenth-century theological decision, not in a building budget.

XVCommon misunderstandings

The last section gathers the questions the library hears most often. The three biggest slips all come from the same root: the questioner carries a ready-made picture of a hierarchical church and lays it over a block that was never built that way.

Is Protestantism a new sect that split off recently?

No. Its starting date is 31 October 1517, more than five hundred years ago. The sense of newness probably comes from the fact that Protestantism reached Vietnam in 1911, about four hundred years later than Catholicism, so on Vietnamese soil it is indeed a young religion, but worldwide it is not.

Who is the pope of Protestantism?

There is none. This is not a matter of not yet having elected one, but of the teaching having no place for such a position. Each church or each convention has its own leaders, with titles such as senior pastor, bishop or council president, and their authority stops at the edge of their own organisation. The Archbishop of Canterbury on the Anglican side is likewise a focus of unity, not a holder of jurisdiction.

Do Protestants worship Martin Luther?

No. In a Protestant church there is no altar to Luther, no statue to pray before, and no prayer addressed to him. He is remembered as a historical figure and a translator of the Bible, and he himself objected to having his name given to a group of believers.

Why does the Protestant cross have no figure of the crucified Christ?

Not because the Passion is taken lightly. The usual explanation in the churches is that the empty cross emphasises that the Lord has risen and the tomb is empty, that is, it emphasises the resurrection rather than stopping at the death. There is also a reason concerning images, since many Reformed branches hold that figurative images in places of worship should be limited. Holy Week and Good Friday remain major days.

Are Jehovah's Witnesses and Mormons Protestant?

The mainline Protestant churches do not place these two groups within their block, and this is a description of classification, not a judgement. The reason given is that the two groups do not share the position on the doctrine of the Trinity set out in the Nicene Creed, and the Mormons also accept as scripture books beyond the sixty-six-book Bible. Both groups also arose in the United States in the nineteenth century rather than coming out of the Reformation.

Is the Protestant Bible missing seven books?

The two sides describe the matter in two ways. The Protestant side says it follows the thirty-nine-book list of the Hebrew tradition. The Catholic side says the seventy-three-book canon goes back to the early Christian communities that used the Greek translation, and was reaffirmed by the Council of Trent in 1546. The New Testament is identical on both sides.

Does becoming Protestant mean abandoning one's ancestors?

The question-and-answer page of the Sài Gòn congregation of the Evangelical Church of Vietnam answers that Protestants do not worship or make offerings to their grandparents and parents, and explains that filial piety is expressed by loving, supporting, obeying and caring for parents while they are alive, and by arranging a proper funeral and remembering them after they die, based on the fifth commandment. This differs from Vietnamese Catholicism after 1965 and from the practice of ancestor veneration.

?Quick Questions

How do Protestantism and Catholicism differ?

Both belong to Christianity, both profess the Triune God and believe in Jesus Christ, and they separated with the Reformation of 1517. There are four main differences. Catholicism accepts both Scripture and Sacred Tradition, while Protestantism takes Scripture as the final standard. Catholicism is in communion under the authority of the Pope, while Protestantism consists of many self-governing churches. Catholicism has seven sacraments, while most Protestant branches keep two, baptism and the Lord's Supper. Catholicism venerates Our Lady and the saints, while Protestants pray directly to God. The Bibles also differ in their number of books, 73 against 66.

Who is the head of Protestantism?

No one. Protestantism is not one church but the common name for many churches of Reformation origin, each church or each convention governing itself and electing its own leaders. International bodies such as the World Council of Churches or the Lutheran World Federation are only forums for discussion and joint work, with no power to give orders to member churches. In Vietnam, each of the eleven recognised organisations has its own executive board and its own general assembly.

What are the five solas of Protestantism?

Sola in Latin means alone. The five are sola scriptura, Scripture alone, meaning that Scripture is the final standard, sola fide, faith alone, sola gratia, grace alone, solus Christus, Christ alone as mediator, and soli Deo gloria, everything directed to the glory of God. Note that the sixteenth-century Reformers used each phrase separately, and gathering exactly these five into a named set is a summary made by later generations.

Did Martin Luther really nail the 95 theses to a church door?

Historians still debate it, and the library records both sides. In 1961 the historian Erwin Iserloh argued that the nailing never happened and that Luther only sent the theses to his superiors asking for a disputation, and the scholars Andrew Pettegree and Peter Marshall also lean towards doubt, noting that Luther himself never told the story. The other side relies on Melanchthon's words written in 1546 and on a 1540 note by Georg Rörer found in Jena in 2006. What neither side disputes is that on 31 October 1517 Luther sent the theses with a letter to his ecclesiastical superiors.

How many Protestants are there in Vietnam?

According to the 2023 edition of the document Tôn giáo và chính sách tôn giáo ở Việt Nam (Religion and Religious Policy in Vietnam) by the Ban Tôn giáo Chính phủ (the Government Committee for Religious Affairs), there are more than 1.2 million Protestants nationwide, with more than 2,300 clergy and nearly 900 places of worship, belonging to eleven recognised organisations. The two largest are the Evangelical Church of Vietnam (North), which announced 220,000 members and 1,415 churches and meeting points at its April 2026 assembly, and the Evangelical Church of Vietnam (South), which announced more than 700,000 members at its July 2022 assembly.

Is Anglicanism Protestant?

It depends on the classification, and most Anglicans themselves see their church in a middle position. Historically, Anglicanism broke from the authority of Rome in 1534 and took shape in the sixteenth century, so classifications of religion usually place it in the Protestant block, and Pew Research Center states plainly that its Protestant figure includes Anglicans. But the familiar self-description among Anglicans is both Catholic and Reformed, commonly called the middle way. The library places Canterbury and Westminster under Protestantism for tidiness and does not judge who is right.

Do Protestants practise ancestor worship?

The question-and-answer page of the Sài Gòn congregation of the Evangelical Church of Vietnam answers that Protestants do not worship or make offerings to their grandparents and parents. As the church presents it, filial piety is shown while parents are alive, through love, obedience, support and care, and when parents die, through a proper funeral and remembrance, based on the fifth commandment to honour one's father and mother. This differs from Vietnamese Catholicism, which has permitted family ancestral altars since 1965, and from the ancestor veneration practised by Vietnamese people.

Why do Protestant churches have no statues and look so plain?

Because the centre of the service is the sermon, not the altar, the raised central position usually goes to the pulpit, while the communion table is a low table placed in front. Many Reformed branches hold that figurative images in places of worship should be limited, so there are no statues of saints to pray before and no relics, and the cross is usually left empty, without a figure of the crucified Christ, to emphasise the resurrection. The clear glass and bright walls are there so that believers can read the Bibles in their hands.

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