Church History · Lesson 12 · Era 3 (Reformation)

One Becomes Many

Why isn't there just one Protestant church? The Reformation's first family tree — Lutheran, Reformed, Anabaptist, Anglican.

📍 You are here: Era 3 · The Reformation — past the spark (1517), now watching the fire spread and split into distinct flames.

Why this matters for you: You wanted a big map you can teach from — and this is the lesson that explains the confusing part: why there are so many Protestant denominations. Master these four families and you can place almost any Protestant church you'll ever meet (Baptist, Presbyterian, Methodist, Anglican, Mennonite…) onto one branch. This is the genealogy of your own corner of the church.

From Lesson 11: Luther let one idea loose — Scripture alone is the final authority. But here's the catch: once everyone reads Scripture for themselves, they don't all reach the same conclusions. The same principle that started the Reformation guaranteed it could not stay one.

One idea carries the whole lesson: "Scripture alone" was a door that, once opened, could not be shut. Reformers who agreed on Luther's core gospel still disagreed on baptism, the Lord's Supper, and church-and-state — so within one generation the Reformation branched into four great families that survive to this day.

The family tree — four branches from one root

🌱 The root (1517): justification by faith · Scripture alone · grace alone. All four branches share this. They differ on what comes next.

Lutheran

Germany · Scandinavia

Branch 1 · the trunk

Lutheran — Luther's own stream

The original branch: Martin Luther's churches in Germany and the Nordic lands. Conservative in worship (kept much of the old liturgy), centered on justification by faith and Christ's real presence in the Lord's Supper. Anchored later in the Augsburg Confession (1530).

→ today: Lutheran churches worldwide (esp. Germany, Scandinavia, the ELCA/LCMS in the U.S.).

Reformed

Zürich · Geneva

Branch 2 · the systematizers

Reformed — Zwingli, then Calvin

Began with Huldrych Zwingli HOOLD-rikh TSVING-lee in Zürich ZUR-ik (a parallel reformer to Luther). Its giant is John Calvin in Geneva, whose Institutes of the Christian Religion gave Protestantism its most thorough system — God's sovereignty, predestination, Scripture ordering all of life. Simpler worship; Presbyterian (elder-led) government.

→ today: Presbyterian, Reformed, Congregational churches; Knox's Scotland, the Dutch Reformed, the Puritans.

Anabaptist

the "radicals"

Branch 3 · the radical reformation

Anabaptist an-uh-BAP-tist — back to the New Testament church

The "radicals" said Luther and Calvin didn't go far enough. Their conviction: baptism is for believing adults, not infants (so they re-baptized — ana- = "again"). They wanted a church separate from the state, made only of committed disciples, often pacifist. Persecuted brutally by Catholics and other Protestants alike.

→ today: Mennonites MEN-uh-nites, Amish, Hutterites; a key root of the Baptist stream.

Anglican

England

Branch 4 · the political road

Anglican ANG-lih-kan — England's own way

England's break came less from theology than from a king: when Rome refused Henry VIII a divorce, he made himself head of the Church of England (1534). The result became a deliberate middle way (via media VEE-ah MEE-dee-ah) — Protestant in doctrine, Catholic in much of its look and worship.

→ today: the Anglican Communion, Episcopalians; later offshoots like the Methodists.

Why did they split? Three dividing questions

They agreed on the gospel. They divided over the next questions — and these are still the fault lines between Protestant churches today:

① How is Christ present in the Lord's Supper?

Luther: truly present "in/with" the bread. Zwingli: it's a symbol, a memorial. Calvin: a real spiritual presence. At the Marburg Colloquy MAR-boorg (1529) Luther and Zwingli met to unite — and broke over this one question. The first Protestant-vs-Protestant divide.

② Who should be baptized?

Everyone's infants (Lutheran, Reformed, Anglican) — or only believing adults (Anabaptist)? This split the radicals off entirely.

③ How should church and state relate?

Joined, a "Christian society" (Lutheran, Reformed, Anglican) — or wholly separate (Anabaptist)? A question that will echo all the way to America.

The whole lesson in one breath: one root (faith · Scripture · grace) → four branches: Lutheran (the trunk), Reformed (Zwingli & Calvin, the systematizers), Anabaptist (the radicals — believers' baptism, church free of state), and Anglican (England's royal middle way). They split over the Lord's Supper, baptism, and church & state.

Learn the four branches and you can place nearly any Protestant church you'll ever meet.

The hook forward: While Protestants were branching, Rome was not sitting still. The Catholic Church mounted its own powerful renewal — the Counter-Reformation: the Council of Trent, the Jesuits, a tightening and a revival. To keep the story honest and whole (your mission), the next move is to stand on the other side of the divide and see how Rome answered.

Honest history. Two cautions. One: these "four families" are a teaching map, not a tidy fact — reality was messier, with overlaps, sub-groups, and fierce in-fighting. Two: the splitting has a real shadow: Protestants didn't only debate, they persecuted each other (the Anabaptists suffered horrifically from fellow Protestants). The freedom of "Scripture alone" came with the hard problem of who decides when readings conflict — a problem Protestantism still lives with.

📖 Primary source to taste this week: read the opening of Calvin's Institutes, Book I, ch. 1 — his famous line that knowing God and knowing ourselves are bound together. It's clear, weighty, and shows the systematic mind that organized Reformed Christianity (free online: Project Gutenberg — Institutes or CCEL). Even two pages reveals why Calvin shaped so much of Protestant thought.

"The Reformation was not a single movement but a family of movements, united in protest against Rome yet divided among themselves almost from the first." — see Britannica — Reformation, John Calvin & Anabaptists; cross-checked w/ Bruce Shelley, Church History in Plain Language, chs. on the Reformation's spread.

Practice 1 — name the branch

Match each clue to the right Reformation family. Instant feedback below.

Score: 0 / 6

Practice 2 — now teach it (out loud)

Explain why there are many Protestant churches, not one. Four prompts — say each aloud, then reveal.

The root: what do all four branches share — and what's the irony that split them?
Reveal ▸ All share faith / Scripture / grace alone. The irony: "Scripture alone" means everyone reads for themselves — and they don't all agree, so it branches.
The four families: name them, ideally with a place or leader.
Reveal ▸ Lutheran (Luther, Germany) · Reformed (Zwingli & Calvin, Geneva) · Anabaptist (the radicals) · Anglican (Henry VIII, England).
The radicals: what made the Anabaptists "radical"?
Reveal ▸ Believers' baptism (not infants), a church separate from the state, often pacifist. Persecuted by Catholics and Protestants alike.
The fault lines: name one of the three questions that divided them.
Reveal ▸ Any one: the Lord's Supper (real presence vs. symbol — split Luther & Zwingli at Marburg) · baptism (infants vs. believers) · church & state (joined vs. separate).

Four branches + three fault lines, and you can map the whole Protestant world.

Ask me anything

Want the full Calvin story (Geneva, predestination, the Puritans)? Curious how the Baptists relate to the Anabaptists? Or the dramatic Münster MUUN-ster episode that gave the radicals a bad name? Or how John Knox carried the Reformed faith to Scotland? Ask away — I'm your teacher.

Next in Era 3: the Catholic Counter-Reformation — how Rome answered with Trent, the Jesuits, and a real revival. Say next and we cross to the other side of the divide, or name your branch.