After Protestantism entered into the Palatinate, in 1546 the controversy between Lutherans and Calvinists broke out, and especially while the region was under the elector Otto Heinrich (1556–1559), this conflict in Saxony, particularly in Heidelberg, became increasingly bitter and turned violent.
Setelah Protestanisme masuk ke Kurpfalz, pada 1546 terjadi kontroversi antara kaum Lutheran dan Calvinis, dan khususnya ketika wilayah itu berada di bawah Pemilih Otto Heinrich (1556-1559), konflik di Sachsen, khususnya di Heidelberg, menjadi semakin sengit dan berubah menjadi kekerasan.