Cyprian Epistle IX And again He has said, "All sins shall be forgiven unto the sons of men, and blasphemies; but he that shall blaspheme against the Holy Ghost shall not have forgiveness, but is guilty of eternal sin."[4] Cyprian Treatise XII Three Books of Testimonies Against the Jews Also according to Mark: "All sins shall be forgiven, and blasphemies, to the sons of men; but whoever shall blaspheme against the Holy Ghost, it shall not be forgiven him, but he shall be guilty of eternal sin."[556]