Matthew 14:24

Rightly had the Apostles departed from the Lord as unwilling, and slow to leave Him, lest they should suffer shipwreck whilst He was not with them. For it follows, Now when it was evening he was there alone; that is, in the mountain; but the boat was in the middle of the sea tossed with the waves; for the wind was contrary. While the Lord tarries in the top of the mountain, straightway a wind arises contrary to them, and stirs up the sea, and the disciples are in imminent peril of shipwreck, which continues till Jesus comes.

(ubi sup.) For when any of a wicked will and of great power, proclaims a persecution of the Church, then it is that a mighty wave rises against the boat of Christ.

Whence it is well said here, that the ship was in the middle of the sea, and He alone on the land, because the Church is sometimes oppressed with such persecution that her Lord may seem to have forsaken her for a season.

That He commands His disciples to enter the ship and to go across the sea, while He sends the multitudes away, and after that He goes up into the mountain to pray; He therein bids us to be within the Church, and to be in peril until such time as returning in His splendour He shall give salvation to all the people that shall be remaining of Israel, and shall for give their sins; and having dismissed them into His Father's kingdom, returning thanks to His Father, He shall sit down in His glory and majesty. Meanwhile the disciples are tossed by the wind and the waves; struggling against all the storms of this world, raised by the opposition of the unclean spirit.

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.