And, behold, one of them who was with Jesus stretched out his hand, and drew his sword, and struck a servant of the high priest, and cut off his ear.
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Cornelius a Lapide
AD 1637
And behold, one of them which were with Jesus stretched forth his hand, and struck the servant of the high priest. Peter, that Isaiah , who was more fervent and resolute than the others. S. Luke adds that he first asked permission from Christ, "Shall we smite with the sword?" but waited not for His answer, and in his zeal for Christ in His imminent danger drew his sword.
A question is raised, what was this sword ? merely a knife (culter), or a military sword (ensis), or an ordinary sword (gladius)? The Fathers are in favour of ensis.5 S. Hilary says that the sword was ordered to be sheathed, because He was about to destroy them with no human sword, but with the word of His mouth ( Revelation 1:16, Revelation 19:15). S. Ambrose explains the two swords ( Luke 22:38) mystically, as the Old and New Testaments, with which we are armed against the wiles of the devil.
But writers on all sides explain these two swords allegorically as the twofold power of the Church, temporal and spiritual ...
Drew out his sword. Peter did not comprehend the meaning of what Christ had said, Luke xxii. 36. He that hath not a sword, let him buy one, which was no more than an intimation of the approaching danger. Now Peter, or some of them, asked, and said: Lord, shall we strike? But he struck without staying for an answer. (Witham)
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?...