Humanists such as Ulrich von Hutten set the first reformatory signals. Lutheran preachers such as Aegidius Faber in Schwerin or Joachim Slüter in Rostock, author of the oldest Low German hymn book, declared the new form of teaching. Slüter was supported by the Synidkus Johann Oldendorp, who reformed the Rostock Church Order in 1530. For simple Christians it was about individual salvation and the way to achieve this.
The arbitral verdict on the change of religious denomination was delivered in 1549 on Sagsdorf Bridge near Sternberg. It stipulated Protestantism for Mecklenburg and the national church tailored to the sovereigns as “summus episcopus” (head of the church).