Martin Luther Biography, Part 7: Professorship in Wittenberg
Martin Luther first taught at the University of Wittenberg during the winter semester, 1508-9; he apparently took this teaching position at the urging of his mentor, Johann von Staupitz. In the spring of 1511, upon returning from Rome, Luther was called by the Elector of Saxony, Frederick the Wise, to a permanent teaching position at the University of Wittenberg. At first, Luther taught philosophy, then he transferred to teaching theology. In time, Luther began to lecture through various books of the Bible; it was through preparation for these lectures on Scripture that Luther eventually came to his breakthrough in regards to his understanding of justification.
Roland Bainton, Here I Stand: A Life of Martin Luther (Nashville: Abingdon Press, 1978), 39.
Virgil Robinson, Luther the Leader (Ithaca, MI: A.B. Publishing, 1997), 28-29.]