Chap. xxiii.—31. Cyprian writes also to Pompeius about this selfsame matter, and clearly shows in that letter that Stephen, who, as we learn, was then bishop of the Roman Church, not only did not agree with him upon the points before us, but even wrote and taught the opposite views. But Stephen certainly did not "communicate with heretics," merely because he did not dare to impugn the baptism of Christ, which he knew remained perfect in the midst of their perversity. For if none have baptism who entertain false views about God, it has been proved sufficiently, in my opinion, that this may happen even within the Church. "The apostles," indeed, "gave no injunctions on the point;" but the custom, which is opposed to Cyprian, may be supposed to have had its origin in apostolic tradition, just as there are many things which are observed by the whole Church, and therefore are fairly held to have been enjoined by the apostles, which yet are not mentioned in their writings.