Mark 14:70-72

70And he again denied. And again, after a little, those that stood by said to Peter, Truly thou art [one] of them, for also thou art a Galilean. 71But he began to curse and to swear, I know not this man of whom ye speak. 72And the second time a cock crew. And Peter remembered the word that Jesus said to him, Before [the] cock crow twice, thou shalt deny me thrice; and when he thought thereon he wept.