Luke 22:46

Our Lord proves by what comes after, that He prayed for His disciples whom He exhorts by watching and prayer to be partakers of His prayer; for it follows, And he saith unto them, Why sleep ye? Rise and pray, lest ye enter into temptation.

To make known unto us the power of prayer that we may exercise it in adversity, our Lord when praying is comforted by an Angel. (Matt. 4:11.) But some say that the Angel appeared, glorifying Him, saying, O Lord, Thine is the power, for Thou art able to vanquish death, and to deliver weak mankind. Now that the preceding prayer was of His human nature, not His divine, as the Arians say, is argued from what is said of His sweat, which follows, And his sweat was as it were great drops of blood falling down to the ground. Or this is proverbially said of one who has sweated intensely, that He sweated blood; the Evangelist then wishing to show that He was moistened with large drops of sweat, takes drops of blood for an example. But afterwards finding His disciples asleep for sorrow, He upbraids them, at the same time reminding them to pray; for it follows, And when he rose from prayer and was come to his disciples, he found them sleeping. That is, that they should not be overcome by temptation, for not to be led into temptation is not to be overwhelmed by it. Or He simply bids us pray that our life may be quiet, and we be not cast into trouble of any kind. For it is of the devil and presumptuous, for a man to throw himself into temptation. Therefore James said not, "Cast yourselves into temptation," but, When ye are fallen, count it all joy, (Jam. 1:2.) making a voluntary act out of an involuntary.