Luther Summoned to the Diet of Worms

In January of 1521, Pope Leo X, formalized the excommunication of Martin Luther in his bull Decet Romanum Pontificam. The decree removed, as far as the Pope and the structure of the church were concerned Luther’s right to teach the faith, exercise the pastoral office and receive the sacraments. It was not published until October of 1521, since it also excommunicated most of Germany’s princes and city-state governments. Emperor Charles V needed their financial and military support, especially against Suleiman the Magnificent, Sultan of the Islamic Ottoman Empire, then rising in power. His armies were marching towards Belgrade through Serbia and Hungary as these events were happening.

To address these challenges, and the threat to religious unity Martin Luther and his friends represented, Emperor Charles convened a diet (a cross between a parliament and a diplomatic conference) at the city of Worms in Southwest Germany. In January of 1521, negotiations began between the Emperor and his advisors and Elector Frederick the Wise and his advisors to summon Luther to the Diet to defend himself. The Emperor favored the papacy and the institution of the Church, but he knew to move too strongly against Luther would at best deprive him of badly needed support. Frederick was the key prince in the empire and Luther’s protector. So he agreed to give Luther the hearing that the reformer requested and a safe conduct pledge to go to Worms and return to Saxony.

The imperial summons was worded very graciously, addressing Luther with all the titles due to him as a priest and professor of theology. It was vaguely worded, stated as a request for Luther to answer questions about his books. It could be viewed as allowing everything from a full hearing to a simple demand to renounce them all. The safe conduct was generously worded and issued also by Frederick the Wise and Duke George of Saxony. In the back of everyone’s mind was a similar safe conduct given to Jan Hus one hundred years before, which was violated by the then Emperor. Hus was burned at the stake shortly thereafter. Luther and his prince would be relying on the young emperor’s sense of chivalry and his desire to keep peace in Germany.

To placate the Pope and his supporters, the Emperor also issued a mandate to sequester all of Luther’s books. The Emperor’s officials conveyed to Georg Spalatin that this was for show, that the intent was to give Luther a fair hearing. The Elector, his advisors and Luther’s friends were not entirely sure what the truth was, but advised Luther it was likely safe to attend, given the support of the princes and the estates. Luther was determined to confess the truth before the empire, even if it cost his life. He agreed to go.