One of the high priest’s servants, a relative of the man whose ear Peter had cut off, asked, “Didn’t I see you with Him in the garden?”
We have here an account of Christ's arraignment before the high priest, and some circumstances that occurred therein which were omitted by the other evangelists; and Peter's denying him, which the other evangelists had given the story of entire by itself, is interwoven with the other passages.
Commenting on John 18:13-27
One of the servants of the high priest,.... Hearing him so stiffly deny that he was a disciple of Jesus, when he had great reason to believe he was: being his kinsman, whose ear Peter cut off; a near relation of Malchus, to whom Peter had done this injury; and who was present at the same time, and no doubt took particular notice of him...
One of the servants of the high priest, being his kinsman, whose ear Peter cut off, saith, Did not I see thee in the garden with him--No doubt his relationship to Malchus drew attention to the man who smote him, and this enabled him to identify Peter. "Sad reprisals!" [BENGEL]. The other Evangelists make his detection to turn upon his dialect.