He was educated in the school of the parish of St. Nicolai in his native city, then in Lüneburg, and entered the University of Wittenberg, where he became the pupil of Melanchthon and Luther. In 1532, on the recommendation of Melanchthon, he was appointed teacher at the Johanneum in his native city. In 1534 he returned to the University of Wittenberg, and in the following year removed with the university to Jena. After his return to Wittenberg in 1537 he lectured on philology. In 1541 he became preacher of the church of St. Catharine in Hamburg; then acting superintendent in 1562, and was elected superintendent in 1571.