And when the hour was come, he sat down, and the twelve apostles with him. And he said to them: I have desired to eat this pasch with you, before I suffer. For I say to you, that from this time I will not eat it, till it be fulfilled in the kingdom of God. And having taken the chalice, he gave thanks, and said: Take, and divide it among you: For I say to you, that I will not drink of the fruit of the vine, till the kingdom of God come. And taking bread, he gave thanks, and brake; and gave to them, saying: This is my body, which is given for you. Do this for a commemoration of me. In like manner the chalice also, after he had supped, saying: This is the chalice, the new testament in my blood, which shall be shed for you.
(Matthew 26:26-30; Mark 14:22-26; 1 Corinthians 11:17-34)