CHAP. XVIII.--24. Whence Cyprian himself[348] again admonishes us with the greatest fulness, that many who were dead in their trespasses and sins, although they did not belong to the body of Christ, and the members of that innocent and guileless dove (so that if she alone baptized, they certainly could not baptize), yet to all appearance seemed both to be baptized and to baptize within the Church. Since, therefore, there be dead men within the Church, who either do not belong at all to that living dove, or at least do not as yet belong to her; and since there be dead men without, who yet more clearly do not belong to her at all, or not as yet; and since it is true that "another man cannot be quickened by one who himself liveth not,"--it is therefore clear that those who within are baptized by such persons, if they approach the sacrament with true conversion of heart, are quickened by Him whose baptism it is. But if they renounce the world in word and not in deed, as Cyprian declares to be the case with some who are within, it is then manifest that they are not themselves quickened unless they be converted, and yet that they have true baptism even though they be not converted. Whence also it is likewise clear that those who are dead without, although they neither "live themselves, nor quicken others," yet have the living baptism, which would profit them unto life so soon as they should be converted unto peace. * * * * * 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,[349] 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.