Who was this one, who cut off the ear? John says that it was Peter. John 18:10 For the act was of his fervor.
But this other point is worth inquiry, wherefore they were bearing swords? For that they bore them is evident not hence only, but from their saying when asked, here are two. But wherefore did Christ even permit them to have swords? For Luke affirms this too, that He said unto them, When I sent you without purse, and scrip, and shoes, lacked ye anything? And when they said, Nothing, He said unto them, But now, he that has a purse, let him take it, and a scrip, and he that has no sword, let him sell his garment, and buy one. And when they said, Here are two swords, He said unto them, It is enough.
Wherefore then did He suffer them to have them? To assure them that He was to be betrayed. Therefore He says unto them, Let him buy a sword, not that they should arm themselves, far from it; but by this, indicating His being betrayed.
And wherefore does He mention a scrip also?...