Paulus of Obba said: It does not disturb me if any man does not assert the faith and truth of the Church, since the apostle says, “For what if some of them have fallen away from the faith? Has their unbelief made the faith of God of no effect? By no means. For God is true, but every man a liar.” But if God is true, how can the truth of baptism be among the heretics, among whom God is not?