The Protestant Reformation reached the town in 1521, when Christian Ketelhut preached in the town. Ketelhut was forced to leave Stolp in 1522 due to an intervention by Bogislaw X, Duke of Pomerania. Peter Suawe, a Protestant from Stolp, however, continued his practices. In 1524, Johannes Amandus from Königsberg and others arrived and preached in a more radical way. As a consequence, Saint Mary's Church was profaned, the monastery's church was burned, and the clergy were treated poorly. The inhabitants of the town began the process of conversion to Lutheranism. In 1560 Polish pastor Paweł Buntowski preached in the town, and in 1586 Polish religious literature spread locally.