Matthew 26:39

He took with Him the self-confident Peter, and the others, that they might see Him falling on His face and praying, and might learn not to think great things, but little things of themselves, and not to be hasty in promising, but careful in prayer. And therefore, He went forward a little, not to go far from them, but that He might be near them in His prayer. Also, He who had said above, Learn of me, for I am meek and lowly in heart, now commendably humbling Himself, falls on His face. But He shows His devotion in His prayer, and as beloved and well-pleasing to His Father, He adds, Not as I will, but as thou wilt, teaching us that we should pray, not that our own will, but that God's will, should be done. And as He began to have fear and sorrow, He prays accordingly that the cup of His Passion may pass from Him, yet not as He wills, but as His Father wills; wills, that is, not according to His Divine and impassible Substance, but according to His human and weak nature. For in taking upon Him the nature of human flesh, He fulfilled all the properties thereof, that it might be seen that He had flesh not in appearance only, but in-reality. The believer indeed must in the first instance be loth to incur pain, seeing it leads to death, and he is a man of flesh; but if it be God's will, he acquiesces because he is a believer. For as we ought not to be too confident that we may not seem to make a boast of our own strength; so neither ought we to be distrustful, lest we should seem to charge God our helper with weakness. It is to be observed that Mark and Luke write the same, but John does not introduce this prayer of Jesus', that this cup may pass from Him, because the first three are rather occupied about Him, according to His human nature, John according to His divine. Otherwise; Jesus makes this petition, because He sees what the Jews will suffer for requiring His death. Then again considering the benefit that would accrue to the whole world from His Passion, He says, But not as I will, but as thou wilt; i. e. If it be possible for all these benefits which shall result from My Passion to be procured without it, let it pass from Me, and both the world be saved, and the Jews not be condemned in putting Me to death. But if the salvation of many cannot be procured without the destruction of a few, saving Thy justice, let it not pass away. Scripture, in many places, speaks of passion as a cup that is drained; and it is drained by him, who in testimony suffers whatever is inflicted upon him. He sheds it, on the contrary, who denies in order to avoid suffering.

Otherwise; He says not, Let this cup pass away from Me, for that would be the speech of one who feared it; but He prays that it may pass not so as that He should be passed over, but that when it has passed from Him, it may go to another. His whole fear then is for those who were to suffer, and therefore He prays for those who were to suffer after Him, saying, Let this cup pass from me, i. e. as it is drunk by Me, so let it be drunk by these, without mistrust, without sense of pain, without fear of death. He says, If it be possible, because flesh and blood shrink from these things, and it is hard for human bodies not to sink beneath their infliction. That He says, Not as I will, but as thou wilt, He would fain indeed that they should not suffer, lest their faith should fail in their sufferings, if indeed we might attain to the glory of our joint inheritance with Him without the hardship of sharing in His Passion. He says, Not as I will, but as thou wilt, because it is the Father's will that strength to drink of the cup should pass from Him to them, that the Devil might be vanquished not so much by Christ as by His disciples also.

However, even these He dismisses: "And He went on a little farther, and prayeth, saying, Father, if it be possible, let this cup pass from me; nevertheless not as I will, but as Thou wilt. And He cometh unto them, and findeth them sleeping, and saith unto Peter, What, could ye not watch with me one hour? Watch and pray, that ye enter not into temptation; the spirit indeed is willing, but the flesh is weak." And He prays with earnestness, in order that the thing might not seem to be acting. And sweats flow over him for the same cause again, even that the heretics might not say this, that He acts the agony. Therefore there is a sweat like drops of blood, and an angel appeared strengthening Him, and a thousand sure signs of fear, lest any one should affirm the words to be feigned. For this cause also was this prayer. By saying then, "If it be possible, let it pass from me," He showed His humanity; but by saying, "Nevertheless not as I will, but as Thou wilt," He showed His virtue and self-command, teaching us even when nature pulls us back, to follow God. For since it was not enough for the foolish to show His face only, He uses words also. Again, words sufficed not alone, but deeds likewise were needed; these also He joins with the words, that even they who are in a high degree contentious may believe, that He both became man and died. For if, even when these things are so, this be still disbelieved by some, much more, if these had not been. See by how many things He shows the reality of the incarnation: by what He speaks, by what He suffers. After that He cometh and saith to Peter, as it is said, "What, couldest thou not watch one hour with me?" All were sleeping, and He rebukes Peter, hinting at him, in what He spake. And the words, "with me," are not employed without reason; it is as though He had said, Thou couldest not watch with me one hour, and wilt thou lay down thy life for me? and what follows also, intimates this self-same thing. For "Watch," saith He, "and pray not to enter into temptation." See how He is again instructing them not to be self-confident, but contrite in mind, and to be humble, and to refer all to God.

Whence He says emphatically, This cup, that is, of this people of the Jews, who, if they shall put Me to death, can have no excuse for their ignorance, seeing they have the Law and the Prophets, who speak of Me.

(de Cons. Ev. iii. 4.) And that none might think that He limited His Father's power, He said not, If thou canst do it, but If it may be, or, If it be possible; as much as to say, If thou wilt. For whatever God wills can be done, as Luke expresses more plainly; for he says not, If it be possible, but If thou wilt. (in Ps. 32. enar. 2.) Christ thus as man shows a certain private human will, in which He who is our head figures both His own will and ours when He says, Let it pass from me. For this was His human will choosing something as apart for Himself. But because as man He would be righteous and guide Himself by God's will, He adds, Nevertheless not as I will, but as thou wilt; as much as to say to us, Man, behold thyself in Me, that thou canst will somewhat apart of thyself, and though God's will is other, this is permitted to human frailty. (Quaest. Ev. i. 47.) Nor is that an absurd interpretation which makes Our Lord pray thrice because of the threefold temptation of His Passion. To the temptation of curiosity is opposed the fear of death; for as the one is a yearning for the knowledge of things, so the other is the fear of losing such knowledge. To the desire of honour or applause is opposed the dread of disgrace and insult. To the desire of pleasure is opposed the fear of pain.