mark 14:68 But he denied, saying, I know not, neither understand I what thou sayest. And he went out into the porch; and the cock crew. - Free Bible Online

      68. But he denied--"before all" (Mt 26:70).
      saying, I know not, neither understand I what thou sayest--in Luke (Lu 22:57), "I know Him not."
      And he went out into the porch--the vestibule leading to the street--no doubt finding the fire-place too hot for him; possibly also with the hope of escaping--but that was not to be, and perhaps he dreaded that, too. Doubtless by this time his mind would be getting into a sea of commotion, and would fluctuate every moment in its resolves.
      AND THE COCK CREW--(See on Lu 22:34). This, then, was the First Denial.

JFB.