Matthew 26:33-35 NIV

33 Peter replied, "Even if all fall away on account of you, I never will."
34 "I tell you the truth," Jesus answered, "this very night, before the rooster crows, you will disown me three times."1

References for Matthew 26:34

35 But Peter declared, "Even if I have to die with you,2 I will never disown you." And all the other disciples said the same.

References for Matthew 26:35