Mark 14:68
But he denied, saying, I do not know nor understand what thou sayest. And he went out into the forecourt; and a cock crew.
Matthew 26:71-72
And when he had gone out into the porch, another woman saw him, and said to those who were there, This man was with Jesus the Nazarene.
Mark 14:29-31
But Peter said to him, Even if all shall fall away, yet will not I.
Mark 14:72
And immediately a cock crew a second time. And Peter called to mind the word that Jesus had said to him, Before a cock crows twice, thou wilt thrice deny me. And when he thought thereon, he wept.
John 13:36-38
Simon Peter saith to him, Lord, whither dost thou go? Jesus answered, Whither I go, thou canst not follow me now; but thou wilt follow me afterward.
2 Timothy 2:12-13
if we endure, we shall also reign with him; if we deny him, he also will deny us;