Why did Peter cut off the ear of Malchus, one of the people trying to arrest Jesus?

Why did Peter cut off the ear of Malchus, one of the people trying to arrest Jesus? Why did Jesus then heal Malchus’s ear?

The Deep Mystery of Peter Cutting Off the Ear of Malchus – Vridar

Ear of malchus hi-res stock photography and images - Alamy

Ear of malchus hi-res stock photography and images - Alamy

The arrest of Christ, the ear of Malchus cut off by St. Peter; the Agony in the Garden: Christ prays in Gethsemane (background) - PICRYL - Public Domain Media Search Engine Public

The Kiss of Judas and Peter Cutting off the Ear of Malchus. O

Peter Swings for the Head — But Gets an Ear!

A Trivial Devotion: Malchus: Beloved Enemy

The Healing of Malchus's Ear

How did Peter manage to get his sword which he used to cut a Roman soldiers ear? Were Jesus and his disciples armed anticipating the arrest of Jesus? - Quora

Judas kiss and arrest of Christ Passion of Christ (series title), Judas kisses Christ on the cheek. The soldiers surround and arrest him. Peter is about to cut off the ear of