Matthew 26:30-35 New Revised Standard Version (NRSV)
30 When they had sung the hymn, they went out to the Mount of Olives.
Peter’s Denial Foretold
31 Then Jesus said to them, “You will all become deserters because of me this night; for it is written,
‘I will strike the shepherd,
32 But after I am raised up, I will go ahead of you to Galilee.” 33 Peter said to him, “Though all become deserters because of you, I will never desert you.” 34 Jesus said to him, “Truly I tell you, this very night, before the cock crows, you will deny me three times.” 35 Peter said to him, “Even though I must die with you, I will not deny you.” And so said all the disciples.