Mark 14:47

And one of them that stood by This we know from St John was Simon Peter (John 18:10), displaying his characteristic impetuosity to the end. Some think the Apostle's name was omitted by the Synoptists lest the publication of it in his lifetime should expose him to the revenge of the unbelieving Jews.

a servant of the high priest In none of the Synoptic Gospels do we find mention of his name either. This we are told by St John was Malchus. St John was an acquaintance of the high-priest's, and probably a frequenter of his house; hence he knew the name of his servant.

his ear Both St Mark and St John use a diminutive = little ear. St Luke alone (Luke 22:50) tells us it was his rightear. Perhaps it was not completely severed, for St Luke, who alone also records the healing, says that our Lord simply touched it and healed him.