Matthew 14:23

Or, that He is alone in the evening, signifies His sorrow at the time of His passion, when the rest were scattered from Him in fear.

For what purpose doth He go up into the mountain? To teach us, that loneliness and retirement is good, when we are to pray to God. With this view, you see, He is continually withdrawing into the wilderness, and there often spends the whole night in prayer, teaching us earnestly to seek such quietness in our prayers, as the time and place may confer. For the wilderness is the mother of quiet; it is a calm and a harbor, delivering us from all turmoils. He Himself then went up thither with this object, but the disciples are tossed with the waves again, and undergo a storm, equal even to the former. But whereas before they had Him in the ship when this befell them, now they were alone by themselves. Thus gently and by degrees He excites and urges them on for the better, even to the bearing all nobly. Accordingly we see, that when they were first near that danger, He was present, though asleep, so as readily to give them relief; but now leading them to a greater degree of endurance, He doth not even this, but departs, and in mid sea permits the storm to arise, so that they might not so much as look for a hope of preservation from any quarter; and He lets them be tempest-tost all the night, thoroughly to awaken, as I suppose, their hardened heart. For such is the nature of the fear, which the time concurs with the rough weather in producing. And together with the compunction, He cast them also into a greater longing for Himself, and a continual remembrance of Him.

And His pretext indeed for dismissing them was the multitude, but He was Himself minded to go up into the mountain; and He did this, instructing us neither to be always in intercourse with multitudes, nor always to fly from the crowd, but each of the two as may be expedient, and giving each duly his turn.

That He withdraws to pray alone, you should refer not to Him who fed five thousand on five loaves, but to Him who on hearing of the death of John withdrew into the desert; not that we would separate the Lord's person into two parts, but that His actions are divided between the God and the man. Also He ascends into the mountain alone because the multitude cannot follow Him aloft, until He has instructed it by the shore of the sea.

(App. Serm. 72. 1.) Mystically; The mountain is loftiness. But what is higher than the heavens in the world? And Who it was that ascended into heaven, that our faith knows. Why did He ascend alone into heaven? Because no man has ascended into heaven, but He that came down from heaven. For even when He shall come in the end, and shall have exalted us into heaven, He will yet ascend alone, inasmuch as the head with its body is One Christ, and now the head only is ascended. He went up to pray, because He is ascended to make intercession to His Father for us.