Jesus predicts betrayal and falling away.

Mark 14:17-21, 26-31

[17] And when it was evening, he came with the twelve. 

[18] And as they were reclining at table and 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.”

[26] And when they had sung a hymn, they went out to the Mount of Olives.

[27] And Jesus said to them, "You will all fall away, for it is written, 'I will strike the shepherd, and the sheep will be scattered.'

[28] But after I am raised up, I will go before you to Galilee."

[29] Peter said to him, "Even though they all fall away, I will not."

[30] And Jesus said to him, "Truly, I tell you, this very night, before the rooster crows twice, you will deny me three times."

[31] But he said emphatically, "If I must die with you, I will not deny you." And they all said the same.