Formula of Concord
He combatted not only the Calvinists but the Schwenkfeldians and Anabaptists, who were still active at Strasbourg; and introduced the Lutheran catechism (1554). He instituted private confession in the Church of St. Nicholas, and kept up the rite of confirmation when it began to fall into disuse in other Strasbourg churches. Marbach also took an active part in bringing about the acceptance of the Formula of Concord; and prevailed on the Strasbourg theologians to sign the Zerbst Formula (1571), while the official acceptance of the Formula of Concord was opposed by the town council. In the Palatinate he assisted Louis VI in 1576 to restore Lutheranism after the death of Frederick III. He died at Strasbourg.