In 1524, he was a priest in Schwäbisch Gmünd, where he tried to introduce the Reformation.
In 1525, in order to escape persecution due to his Lutheran leanings, he fled to the University of Wittenberg.
He was the first to write a catechism in 1528 that actually carried that title "on the cover", a year before Luther wrote his own.
As a deacon in the Sebalduskirche in Nürnberg, he took part in the Bern Disputation of 1528.
In May, on the recommendation of Lazarus Spengler, he was appointed pastor to the city of Ansbach by George the Pious .