John Lightfoot on Luke 22:43

[An angel strengthening him.] I. In his temptations in the wilderness there was no angel by him; for St. Matthew saith, chapter 4:11, "Then the devil leaveth him, and, behold, angels came and ministered unto him": that is, not till the devil had first left him. But in the midst of this trial there was an 'angel strengthening him': and why so? By reason of his agony, you will say, and that very truly: but whence arose this agony? and of what kind was it? It was occasioned (you will say) from a sense of divine indignation and wrath. This dare not I say or imagine, that God was angry or conceived any indignation against him at all. And if the anguish and agony of his mind was the result of the divine wrath pressing in upon him, I do not see what kind of comfort an angel could minister against the wrath of God. It is rather an argument God was not angry with him, when he sent an angel to comfort him.

II. It is not to be doubted, but that Christ was now wrestling with a furious enraged devil; yea, a devil loosed from his chain, and permitted, without any check or restraint from divine providence, to exert all his force and rage against him: which was permitted by God, not from any displeasure against his Son, but that even human nature might, by this her combatant, get a conquest over this insulting enemy. For it had been a small thing to have vanquished the devil by mere divine power.

III. However therefore it is not here related in express terms, yet could I easily persuade myself, that the devil might at this time appear to our Saviour in some visible shape. When he tempted him in the wilderness, he put on the disguise of some good angel, or rather some kind of resemblance of the Holy Ghost. But in this last temptation he puts on himself, and appears in his own colours; viz. in some direful formidable figure, on purpose to terrify our Lord. And from thence it was that he began to be sore amazed, and to be very heavy, Mark 14:33; and here to be in an agony. Nor do I rashly, and without any ground, suppose this, but upon these reasons:

I. Whereas that old dragon assaulted the first Adam in a garden in a visible shape; it is not absurd to imagine, he did so now to the second Adam, in a garden, in a visible shape.

II. This our evangelist tells us concerning his temptation in the wilderness, that "when the devil had ended all the temptation, he departed from him, for a season." Here he takes the season to return; and I see no reason why he should not at this time, as well as in the wilderness, assume some visible shape. Then, indeed, he addressed himself in a charming and grateful shape, to have enticed and deceived him; but now in a frightful and horrid one, to have amazed and terrified him. He had already experienced how vain a thing it was to go about to cheat and allure him: what remained therefore but to shake his mind (if possible) with fright and terror?

III. For when he had no greater invention in his whole storehouse, by which he could distress and shake the minds of mortals, than the horrid apparition of himself, none will conceive he would neglect this engine, that if it could be, he might disturb his soul through his eye. That, therefore, which the Jews feign or dream about Solomon, that he saw the angel of death (that is, the devil) gnashing his teeth, and that a disciple of Rabbi did so too, I suppose acted in good earnest here; namely, that Christ saw the devil, that old dragon, gaping at him with all horror he could put on. And in this sense would I understand that of the "messenger of Satan buffeting the apostle": viz. that the devil did appear visibly to him in some frightful shape, to afflict and terrify him. And perhaps that vehement desire he had to sift the disciples (v 31) respects this same thing, namely, that he might be permitted to assault them with such kind of affrightments.