Mark 14: 18 - 25
18 And as they were at table eating, Jesus said, "Truly, I say to you, one of you will betray me, one who is eating with me."
19 They began to be sorrowful, and to say to him one after another, "Is it I?"
20 He said to them, "It is one of the twelve, one who is dipping bread into the dish with me.
21 For the Son of man goes as it is written of him, but woe to that man by whom the Son of man is betrayed! It would have been better for that man if he had not been born."
22 And as they were eating, he took bread, and blessed, and broke it, and gave it to them, and said, "Take; this is my body."
23 And he took a cup, and when he had given thanks he gave it to them, and they all drank of it.
24 And he said to them, "This is my blood of the covenant, which is poured out for many.
25 Truly, I say to you, I shall not drink again of the fruit of the vine until that day when I drink it new in the kingdom of God."

EWTN