Mark 14:68-71

68But he denied, saying, I know not nor understand what thou sayest. And he went out into the vestibule; and a cock crew.

69And the maid, seeing him, again began to say to those that stood by, This is [one] of them.

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.