Jamieson, Fausset & Brown

And Simon Peter was standing and warming himself. They said therefore . . . Art thou not also one of his disciples?--In Mat 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 Mar 14:69. But in Luk 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 Mat 26:72, "He denied with an oath, I do not know the man." This was THE SECOND DENIAL.