Our Lord calls the cup the New Testament, as it follows, This cup is the New Testament in my blood, which shall be shed for you, signifying that the New Testament has its beginning in His blood. For in the Old Testament the blood of animals was present when the law was given, but now the blood of the Word of God signifies to us the New Testament. But when He says, for you, He does not mean that for the Apostles only was His Body given, and His Blood poured out, but for the sake of all mankind. And the old Passover was ordained to remove the slavery of Egypt; but the blood of the lamb to protect the first-born. The new Passover was ordained to the remission of sins; but the Blood of Christ to preserve those who are dedicated to God.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).