Luke 8:22

Our Lord therefore, who knew that He came upon earth for a divine mystery, having left His kinsfolk, went up into the ship.

When the disciples saw that all men received help from Christ, it seemed fitting that they themselves also should in turn rejoice in the benefits of Christ. For no one regards that which happens in the person of another equally with that to himself. The Lord therefore exposed the disciples to the sea and the winds, as it follows, Now it came to pass on a certain day that he went into a ship with his disciples; and he said unto them, Let us go over unto the other side of the lake: and they launched forth.

Or, it was not His disciples, but the sailors and others in the ship who wondered. But allegorically, the sea or lake is the dark and bitter tide of the world, the ship is the wood of the cross, by help of which the faithful, having passed the waves of this world, reach the shore of a heavenly country. His disciples also, when summoned, enter in with Him. Hence He says, If any one will come after me, let him deny himself, and take up his cross, and follow me. (Mat. 16:24.) While His disciples are sailing, that is, the faithful passing through this world, and meditating in their minds the rest of the world to come, and by the breath of the Holy Spirit, or also their own exertions, eagerly leaving behind them the unbelieving pride of the world, suddenly our Lord fell asleep, that is, the time of our Lord's passion was come, and the storm descended. For when our Lord entered the sleep of death upon the cross, the waves of persecution rose, stirred up by the breath of the devil, but while the patience of the Lord is not disturbed by the waves, the faint hearts of the disciples are shaken and tremble. They awoke our Lord lest they should perish while He slept, because having seen His death they wish for His resurrection, for if that were delayed they would perish for ever. He rises therefore and rebukes the wind, since by His sudden rising again He put down the pride of the devil who had the power of death. (Heb. 2:14.) But He makes the tempest of nature to cease, since by His resurrection He baffled the rage of the Jews, who plotted His death. In like manner, when He appeared after His death to His disciples, He upbraided them with their unbelief, (Mark 16:14.) and thus having calmed the swelling waves, He made plain to all the power of His divinity.