Matthew 26:73-75

And after a little while they that stood by came and said to Peter, Of a truth thou also art one of them; for thy speech maketh thee known. Then began he to curse and to swear, I know not the man. And straightway the cock crew. And Peter remembered the word which Jesus had said, Before the cock crow, thou shalt deny me thrice. And he went out, and wept bitterly.