Ambrose of Milan
Catena Aurea · Lukasevangelium 8
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. But as they sailed he fell asleep: and there came down a storm of wind on the lake; and they were filled with water, and were in jeopardy. And they came to him, and awoke him, saying, Master, master, we perish. Then he arose, and rebuked the wind and the raging of the water: and they ceased, and there was a calm. And he said unto them, Where is your faith? And they being afraid wondered, saying one to another, What manner of man is this! for he commandeth even the winds and water, and they obey him. 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.
You must remember that no one can pass from the course of this life without temptations, for temptation is the trial of faith. We are therefore subject to the storms of spiritual wickedness, but as watchful sailors we must awake the Pilot, who does not obey but commands the winds, who although Henow no longer sleeps in the sleep of His own body, yet let us beware, lest through the sleep of our bodies He is to us asleep and at rest. But they are rightly reproved who feared, when Christ was present; since he surely who clings to Him can in no wise perish.