How did Martin Luther use Wartburg Castle during his exile?

Following his appearance at the Diet of Worms in 1521, where he was declared an outlaw and a heretic, Martin Luther sought refuge to escape potential arrest and execution. His protector, Elector Frederick III the Wise of Saxony, arranged for him to hide at the Wartburg, a castle near Eisenach, Thuringia.123

Luther remained in seclusion at the castle from May 1521 to March 1522. During this period of exile, he utilized his time to undertake a significant scholarly project: he began his translation of the New Testament from the original Greek into German. By making the Bible accessible in the vernacular, Luther provided a foundational challenge to the religious establishment of his time, further fueling the Reformation.32