Mark 14:68
But he denied, saying, I know not, neither understand I what you say. And he went out into the porch; and the cock crowed.
Matthew 26:71-72
And when he was gone out into the porch, another maidservant saw him, and said unto them that were there, This fellow was also with Jesus of Nazareth.
Mark 14:29-31
But Peter said unto him, Although all shall be offended, yet will not I.
Mark 14:72
And the second time the cock crowed. And Peter called to mind the word that Jesus said unto him, Before the cock crows twice, you shall deny me three times. And when he thought on this, he wept.
John 13:36-38
Simon Peter said unto him, Lord, where do you go? Jesus answered him, Where I go, you cannot follow me now; but you shall follow me afterwards.
2 Timothy 2:12-13
If we suffer, we shall also reign with him: if we deny him, he also will deny us: