Upon the loaf and upon the cup of the Lord, in letters which speak not to the eye, but to the heart of every disciple, is inscribed, "When this you see, remember me." Indeed, the Lord says to each disciple, when he receives the symbols into his hands, "This is my body broken for you. This is my blood shed for you." The loaf is thus constituted a representation of his body - first whole, then wounded for our sins. The cup is thus instituted a representation of his blood - once his life, but now poured out to cleanse us from our sins.