All four Gospels mention the cutting off of the high priest's servant's ear (Mt 26:51, Mk 14:47, Lk 22:50, Jn 18:10). St. Luke alone records the healing (22:50–51); St. John alone names both the disciple who struck and the servant who was struck — Simon Peter, and Malchus.
In the moment of Christ's arrest, Peter drew a sword and struck the slave of the high priest, cutting off his right ear. Christ rebuked Peter: 'Suffer ye thus far' (Lk 22:51) — 'Put up thy sword into the scabbard. The chalice which my Father hath given me, shall I not drink it?' (Jn 18:11). Then He touched the man's ear and healed him.
This is the last miracle of Our Lord's earthly ministry — worked at the hour of His arrest, on the very servant of those who came to seize Him, in the moment when one of His own disciples had drawn a sword in His defense. The healing of an enemy is the seal of the long ministry that began with the cleansing of the leper. Tradition, preserved in some Eastern Churches, holds that Malchus and his family later became Christians.