John 18:12

ἡ οὖν σπ. Therefore the band; because of S. Peter’s violent attempt at rescue. The χιλίαρχος is the tribune of the Roman cohort. His presence with the detachment shews that the hierarchy had prepared the Romans for serious resistance. Peter’s violence confirms these representations. Jesus the Nazarene is a dangerous character who incites His followers to rebellion; He must be secured and bound. And the incident in John 18:6 would suggest great caution, as in dealing with a powerful magician.