For I have received of the Lord that which also I delivered unto you, That the Lord Jesus the same night in which he was betrayed took bread: And when he had given thanks, he broke it, and said, Take, eat: this is my body, which is broken for you: this do in remembrance of me. After the same manner also he took the cup, after he had eaten, saying, This cup is the new testament in my blood: this do you, as often as you drink it, in remembrance of me. For as often as you eat this bread, and drink this cup, you do show the Lord's death till he comes.
(1 Corinthians 11:23-26)