Theophylact of Ohrid
Catena Aurea · Johannesevangelium 18
Then Simon Peter having a sword drew it, and smote the high priest’s servant, and cut off his right ear. The servant’s name was Malchus. Then said Jesus unto Peter, Put up thy sword into the sheath: the cup which my Father hath given me, shall I not drink it?
Or, the cutting off of the high priest’s servant’s right ear is a type of the people’s deafness, of which the chief priests partook most strongly: the restoration of the ear, of ultimate reenlightenment of the understanding of the Jews, at the coming of Elias.