john 18:25 And Simon Peter stood and warmed himself. They said therefore unto him, Art not thou also one of his disciples? He denied it, and said, I am not. - Free Bible Online

      25. And SimonPeter was standing and warming himself. They said therefore . . . Art thou not also one of his disciples?--In Mt 26:71 the second charge was made by "another maid, when he was gone out into the porch," who "saw him, and said unto them that were there, This [fellow] was also with Jesus of Nazareth." So also Mr 14:69. But in Lu 22:58 it is said, "After a little while" (from the time of the first denial), "another [man] saw him, and said, Thou art also of them." Possibly it was thrown at him by more than one; but these circumstantial variations only confirm the truth of the narrative.
      He denied it, and said, I am not--in Mt 26:72, "He denied with an oath, I do not know the man." This was THE SECOND DENIAL.

JFB.