It is here that the logic of the rule of faith operative in the ante-Nicene period must be properly grasped. What the received Scriptures said of God was everywhere held to be true of God and his essential character—as against rival claims, including those of the Marcionites and Valentinians, among others. Because this only true God sent his only true Son, the received Scriptures revealed the trinitarian God of Christian faith. The Logos was active in the life of Israel, from creation to election