What was the Protestant Reformation?

The Spark: Martin Luther, 1517

On October 31, 1517, an Augustinian monk named Martin Luther nailed (or sent, historically debated) 95 Theses to the door of the Castle Church in Wittenberg, Germany. His immediate concern was the selling of indulgences — the church's practice of accepting payment in exchange for remission of sin's temporal punishment. But behind this lay a deeper dispute: how is a person made right with God?

The Core Issues

The Reformers rallied around five Latin phrases that capture their disagreements with Rome:

• Sola Scriptura — Scripture alone is the ultimate authority
• Sola Fide — Justification by faith alone
• Sola Gratia — Salvation by grace alone
• Solus Christus — Through Christ alone
• Soli Deo Gloria — For the glory of God alone

Key Figures

Martin Luther — The catalyst, who translated the Bible into German and emphasized justification by faith.

John Calvin — Systematized Reformed theology in Geneva; wrote the Institutes of the Christian Religion.

Ulrich Zwingli — Led reform in Zurich, particularly emphasizing a symbolic view of the Lord's Supper.

Thomas Cranmer — Archbishop of Canterbury who shaped the Church of England through the Book of Common Prayer.

Why It Still Matters

The Reformation produced the denominations that most Protestants belong to today — Baptist, Lutheran, Reformed/Presbyterian, Anglican, Methodist (the latter coming later, in the 18th century). Its emphasis on the individual's direct access to God through Scripture and faith reshaped Western civilization as much as it reshaped the church.

"The righteous shall live by faith." — Romans 1:17 (the text that changed Luther's life)