A.T. Robertson Commentary John 18:25

"Now Simon Peter was standing and warming himself. They said therefore unto him, Art thou also [one] of his disciples? He denied, and said, I am not." — John 18:25 (ASV)

Was standing and warming himself (ην εστως κα θερμαινομενος). Two periphrastic imperfects precisely as in verse 18, vivid renewal of the picture drawn there. John alone gives the examination of Jesus by Annas (18:19-24) which he places between the first and the second denials by Peter. Each of the Four Gospels gives three denials, but it is not possible to make a clear parallel as probably several people joined in each time. This time there was an hour's interval (Luke 22:59). The question and answer are almost identical with verse 17 and "put in a form which almost suggested that Peter should say 'No'" (Bernard), a favourite device of the devil in making temptation attractive.