John Lightfoot on Luke 22:47

[To kiss him.] Our Saviour had to do with a frightful and terrifying devil; but this traitor seems possessed with a tame and gentle one. He converses with the apostles, and there is no token of a devil dwelling in him. He is present at the Passover, at the eucharist, and the very lips of Christ, and still no sign of Satan being his inmate. But when once the devil hath done his work by thee, then, Judas, take heed of thy devil.

As to this treacherous contrivance of Judas, let us frame the most gentle opinion of it that the matter can bear: for instance, that he might perhaps think with himself, that it was not possible for Christ to be apprehended by the Jews, having already seen him working such stupendous miracles, and more than once strangely delivering himself from them: and grant further, that when he said to them, "Whomsoever I shall kiss, that is he, lay hold of him," he said it scoffingly, as believing they could not be able to lay hold on him: grant we, in a word, that when he saw him condemned, he repented himself, having never suspected that matters would have gone so far, presuming that Christ would easily have made his escape from them, and himself should have got thirty pieces of silver by the bargain: let us grant, I say, that this was his contrivance, and colour it over with as plausible excuses as we can; yet certainly was there never any thing so impiously done by mortal man, than for him thus to play with the Holy of Holies, and endeavour to make merchandise of the Son of God. However, I suspect much worse things hatched in the breast of this traitor: viz. that Christ did really not please him; and, with the great chiefs of that nation, though he supposed him the true Messiah, yet not such a one as answered their carnal expectation.

The Rabbins distinguish between lawful kisses and kisses of folly; saying, that "all kisses are kisses of folly excepting three": which they there reckon up. But what kind of kiss was this? a kiss of folly? Alas! it is too low and dwarfish a term for this gigantic monster.