Matthew 26:17-35 (ESV)
The Passover with the Disciples
17 Now on the first day of Unleavened Bread the disciples came to Jesus, saying, “Where will you have us prepare for you to eat the Passover?”18 He said, “Go into the city to a certain man and say to him, ‘The Teacher says, My time is at hand. I will keep the Passover at your house with my disciples.’” 19 And the disciples did as Jesus had directed them, and they prepared the Passover.
20 When it was evening, he reclined at table with the twelve.  21 And as they were eating, he said, “Truly, I say to you, one of you will betray me.” 22 And they were very sorrowful and began to say to him one after another, “Is it I, Lord?” 23 He answered, “He who has dipped his hand in the dish with me will betray me. 24 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.” 25 Judas, who would betray him, answered, “Is it I, Rabbi?” He said to him, “You have said so.”
Institution of the Lord’s Supper
26 Now as they were eating, Jesus took bread, and after blessing it broke it and gave it to the disciples, and said, “Take, eat; this is my body.”27 And he took a cup, and when he had given thanks he gave it to them, saying, “Drink of it, all of you, 28 for this is my blood of the  covenant, which is poured out for many for the forgiveness of sins. 29 I tell you I will not drink again of this fruit of the vine until that day when I drink it new with you in my Father’s kingdom.”
Jesus Foretells Peter’s Denial
30 And when they had sung a hymn, they went out to the Mount of Olives. 31 Then Jesus said to them, “You will all fall away because of me this night. For it is written, ‘I will strike the shepherd, and the sheep of the flock will be scattered.’ 32 But after I am raised up, I will go before you to Galilee.” 33 Peter answered him, “Though they all fall away because of you, I will never fall away.” 34 Jesus said to him, “Truly, I tell you, this very night, before the rooster crows, you will deny me three times.” 35 Peter said to him, “Even if I must die with you, I will not deny you!” And all the disciples said the same.