In the spring of 1524, supporters of Müntzer burned down a small pilgrimage chapel at Mallerbach, much to the annoyance of the abbess of the Naundorf nunnery. The town council and the castellan failed to do anything about her complaint. But in July, Müntzer was invited before the Electoral Duke Johann in Allstedt Castle, possibly in lieu of a belated "trial sermon", and there he preached his famous sermon on the "Second Chapter of the Book of Daniel" (aka "The Sermon Before the Princes") – a barely concealed warning to the princes that they should pitch in with the Allstedt reforms or face the wrath of God.