Bible & Christianity › Reformation › Martin Luther
Luther's Ninety-five Theses
October 31, 1517· Council, creed or writing· Books & writings
Historical recordConfirmed by archaeology, outside sources or contemporary records.
Luther's 95 Latin propositions against the abuse of indulgences, sent to the Archbishop of Mainz on October 31, 1517.
See it on the Bible & Christianity map →What it is
Luther wrote them in Latin as points for an academic debate. Thesis 86 asks why the pope, whose wealth exceeds the richest Crassus, does not build St. Peter's with his own money instead of poor believers'. On October 31, 1517, he mailed them to Archbishop Albrecht of Mainz. Others had them printed and translated into German, and within weeks they had spread across Germany. Rome opened proceedings against him in 1518.
Why it matters
They turned a scholarly complaint into a public movement. Protestants mark October 31 as Reformation Day; 2017 was celebrated as the 500th anniversary.
Sources and history
Luther's dated letter to Albrecht survives, as do printed editions from 1517 made in Nuremberg, Leipzig and Basel.
Questions and debates
Whether Luther actually nailed them to the Wittenberg Castle Church door is debated: the main account comes from Philip Melanchthon, written after Luther's death, and Melanchthon was not yet in Wittenberg in 1517.
Connections (3)
▸Sale of indulgences provoked Luther's Ninety-five ThesesHistorical record
The connection
Frederick the Wise banned Tetzel from Saxony, but he preached just over the border, and Luther's parishioners went to buy. Luther feared they thought they had bought forgiveness without repentance. His theses argue that true repentance is lifelong and that the pope cannot release souls from purgatory for money.
When and where
Tetzel at Jüterbog, near Wittenberg, spring 1517; the theses are dated October 31, 1517.
Historical evidence
Luther's letter to Albrecht, sent with the theses, names the indulgence preachers and their instructions as his concern.
Questions and debates
Whether Luther intended a protest or only a debate is discussed; in 1517 he still accepted indulgences in principle.
▸Martin Luther wrote Luther's Ninety-five ThesesHistorical record
The connection
As professor of theology at Wittenberg, Luther drafted 95 Latin theses to invite an academic debate on indulgences. He sent them to Archbishop Albrecht of Mainz and to his own bishop. Within weeks others had translated and printed them, making him famous across Germany.
When and where
Wittenberg, Saxony, dated October 31, 1517, the eve of All Saints' Day.
Historical evidence
Luther's dated covering letter to Albrecht survives, and Luther later recalled writing the theses.
Questions and debates
Whether he also nailed them to the Castle Church door, then a university notice board, rests mainly on Melanchthon; a note by Luther's secretary Georg Rörer, found in 2006, supports it.
▸Luther's Ninety-five Theses sparked The Protestant ReformationHistorical record
The connection
Printed and spread across Germany within weeks, the theses made indulgences a public scandal. Rome's response, a heresy case, excommunication in 1521 and Luther's defiance at Worms, turned a dispute over one practice into a break over authority and salvation itself.
When and where
Germany, 1517–1521: hearing before Cardinal Cajetan at Augsburg, 1518; Leipzig debate, 1519; papal bull Exsurge Domine, 1520; Diet of Worms, April 1521.
Historical evidence
Contemporaries already dated the movement from 1517; Luther dated a 1527 letter 'the tenth year after indulgences were trampled underfoot'.
Questions and debates
Some historians question 1517 as the true start, since humanism, politics and reform pressure were already building and the theses themselves were moderate.