戒規
Belief and teaching were based on a number of confessions accepted by the church. These were the Augsburg Confession, the Apology of the Augsburg Confession, the Smalcaldic Articles, Luther's Large Catechism as well as his Small Catechism and the Heidelberg Catechism. Some Lutheran congregations within the Church also accepted the Formula of Concord. Whereas congregations of French Reformed tradition agreed to teach in harmony with the Gallic Confession and the Church discipline. Through the Polish annexation and expulsion of parishioners the Pomeranian Evangelical Church had lost all its united Protestant and Reformed congregations, thus having become purely Lutheran. Among its accepted confessions of faith were only Lutheran ones.