Chap. xix.—25. Wherefore, as regards those who received the persons who came from heresy in the same baptism of Christ with which they had been baptized outside the Church, and said "that they followed ancient custom," it is in vain urged against them "that among the ancients heresies and schisms were yet in their very infancy, so that those were involved in them who were seceders from the Church, and had originally been baptized within the Church, so that it was not necessary that they should be baptized again when they returned and did penance." For so soon as each several heresy existed, and departed from the communion of the Catholic Church, it was possible that, I will not even say the next day, but even on that very day, its votaries might have baptized some who flocked to them. And therefore if this was the old custom, that they should be so received into the Church (as could not be denied even by those who maintained the contrary part in the discussion), there can be no doubt in the mind of any one who pays careful attention to the matter, that those also were so received who had been baptized without in heresy.