Clement of Alexandria Stromata Book V This, then, is to be believed, according to Plato, though it is announced and spoken "without probable and necessary proofs," but in the Old and New Testament. "For except ye believe," says the Lord, "ye shall die in your sins."[157] Cyprian Treatise XII Three Books of Testimonies Against the Jews Also the Lord in the Gospel: "For if ye believe not that I am He, ye shall die in your sins."[36] 2 Clement ,[139]