And Simon Peter followed Jesus, and so did another disciple: that disciple was known unto the high priest, and went in with Jesus into the court of the high priest.
All Commentaries on John 18:15 Go To John 18
Alcuin of York
AD 804
He followed his Master out of devotion, though afar off, on account of fear.
He stood without, as being about to deny his Lord. He was not in Christ, who dared not confess Christ.