What Was the Protestant Reformation — Meaning Explained

The Protestant Reformation began in 1517 when Martin Luther nailed his 95 Theses to the church door in Wittenberg, Germany, challenging the sale of indulgences and other practices. The Reformers—including Luther, John Calvin, Huldrych Zwingli, and John Knox—championed five core principles (Solas): Scripture alone (sola Scriptura), faith alone (sola fide), grace alone (sola gratia), Christ alone (solus Christus), and to God's glory alone (soli Deo gloria). They argued that the medieval church had added traditions that contradicted Scripture. The Reformation led to the translation of the Bible into common languages, a renewed emphasis on preaching, and the formation of Protestant denominations. Its impact on Western civilization—including education, government, and individual liberty—has been immense.