Mark 14:68
But he said, I have no knowledge of him, or of what you are saying: and he went out into the doorway; and there came the cry of a cock.
Matthew 26:71-72
And when he had gone out into the doorway, another saw him and says to those who were there, This man was with Jesus the Nazarene.
Mark 14:29-31
But Peter said to him, Though the others may be turned away from you, I will not.
Mark 14:72
And in the same minute, the cock gave a second cry. And it came to Peter's mind how Jesus had said to him, Before the cock's second cry, you will say three times that you have no knowledge of me. And at this thought he was overcome with weeping.
John 13:36-38
Simon Peter said to him, Lord, where are you going? Jesus said in answer, Where I am going you may not come with me now, but you will come later.
2 Timothy 2:12-13
If we go on to the end, then we will be ruling with him: if we say we have no knowledge of him, then he will say he has no knowledge of us: