Houseteacher in Berlin 1643-1651

In Berlin the number of inhabitants had also declined considerably as a result of the Thirty Years War. The country was destroyed and economically ruined. Elector Friedrich Wilhelm tried to unify Brandenburg and Prussia into one country. He was annoyed by the fights between Lutherans and the Reformed. He demanded mutual tolerance from them both.

In Berlin Paul Gerhardt became the house teacher for the family of the court advocate Andreas Berthold. During this time he wrote many song texts, which were arranged by Johann Crüger, cantor at the Nikolai Church in Berlin. Crüger published them in his hymnal "Praxis Pietatis Melica". In 1647 it already contained 18 songs written by Paul Gerhardt.