Mark 14: 12 - 16, 22 - 26
12 And on the first day of Unleavened Bread, when they sacrificed the passover lamb, his disciples said to him, "Where will you have us go and prepare for you to eat the passover?"
13 And he sent two of his disciples, and said to them, "Go into the city, and a man carrying a jar of water will meet you; follow him,
14 and wherever he enters, say to the householder, `The Teacher says, Where is my guest room, where I am to eat the passover with my disciples?'
15 And he will show you a large upper room furnished and ready; there prepare for us."
16 And the disciples set out and went to the city, and found it as he had told them; and they prepared the passover.
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."
26 And when they had sung a hymn, they went out to the Mount of Olives.

EWTN