john 18:17 Then saith the damsel that kept the door unto Peter, Art not thou also one of this man's disciples? He saith, I am not. - Free Bible Online

      17. Then saith the damsel that kept the door--"one of the maids of the high priest," says Mark (Mr 14:66). "When she saw Peter warming himself, she looked upon him and said" (Mr 14:67). Luke is more graphic (Lu 22:56) --She "beheld him as he sat by the fire (literally, 'the light'), and earnestly looked on him (fixed her gaze upon him), and said." "His demeanor and timidity, which must have vividly showed themselves, as it so generally happens, leading to the recognition of him" [OLSHAUSEN].
      Art thou not also one of this man's disciples?--that is, thou as well as "that other disciple," whom she knew to be one, but did not challenge, perceiving that he was a privileged person.
      He saith, I am not--"He denied before them all, saying, I know not what thou sayest" (Mt 26:70) --a common form of point blank denial; "I know [supply 'Him'] not, neither understand I what thou sayest" (Mr 14:68); "Woman, I know Him not" (Lu 22:57). This was THE FIRST DENIAL. "And he went out into the porch [thinking, perhaps, to steal away], and the cock crew," (Mr 14:68).

JFB.