In the first place, the miracle shows us the supremacy of Christ. We may almost read the Divineness of Christ's mission in the manner of its manifestation. Had Jesus been man only, His thoughts running on human lines, and His plans built after human models, He would have arranged for another Epiphany at the beginning of His ministry, showing His credentials at the first, and announcing in full the purpose of His mission. That would have been the way of man, fond as he is of surprises and sudden transitions; but such is not the way of God. The forces of heaven do not move forward in leaps and somersaults; their advances are gradual and rhythmic. Evolution, and not revolution, is the Divine law, in the realm of matter and of mind alike. The dawn must precede the day. And just so the life of the Divine Son is manifested. He who is the "Light of the world" comes into that world softly as a sunrise, lighting up little by little the horizon of His disciples' thought, lest a revelation which was too full and too sudden should only dazzle and blind them. So far they have seen Him exercise His power over diseases and demons, or, as at Cana, over inorganic matter; now they see that power moving out in new directions. Jesus sets up His throne to face the sea, the sea with which they were so familiar, and over which they claimed some sort of lordship. But even here, upon their own element, Jesus is supreme. He sees what they do not; He knows these deeps, filling up with His omniscience the blanks they seek to fill with their random guesses. Here, hitherto, their wills have been all-powerful; they could take their boats and cast their nets just when and where they would; but now they feel the touch of a Higher Will, and Christ's word fills their hearts, impelling them onward, even as their boats were driven of the wind. Jesus now assumes the command. His Will, like a magnet, attracts to itself and controls their lesser wills; and as His word now launches out the boat and casts the nets, so shortly, at that same "word," will boats and nets, and the sea itself, be left behind.
And did not that Divine Will move beneath the water as well as above it, controlling the movements of the shoal of fishes, as on the surface it was controlling the thoughts and moving the hands of the fishermen? It is true that in Gennesaret, as in our modern seas, the fish sometimes moved in such dense shoals that an enormous "take" would be an event purely natural, a wonder indeed, but no miracle. Possibly it was so here, in which case the narrative would resolve itself into a miracle of omniscience, as Jesus saw, what even the trained eyes of the fishermen had not seen, the movements of the shoal, then regulating His commands, so making the oars above and the fins below strike the water in unison. But was this all? Evidently not, to Peter's mind, at any rate. Had it been all to him, a purely natural phenomenon, or had he seen in it only the prescience of Christ, a vision somewhat clearer and farther than his own, it would not have created such feelings of surprise and awe. He might still have wondered, but he scarcely would have worshipped. But Peter feels himself in the presence of a Power that knows no limit, One who has supreme authority over diseases and demons, and who now commands even the fishes of the sea. In this sudden wealth of spoil he reads the majesty and glory of the new-found Christ, whose word, spoken or unspoken, is omnipotent, alike in the heights above and in the depths beneath. And so the moment his thoughts are disengaged from the pressing task he prostrates himself at the feet of Jesus, crying with awe-stricken speech, "Depart from me; for I am a sinful man, O Lord!" We are not, perhaps, to interpret this literally, for Peter's lips were apt to become tremulous with the excitement of the moment, and to say words which in a cooler mood he would recall, or at least modify. So here, it surely was not his meaning that "the Lord," as he now calls Jesus, should leave him; for how indeed should He depart, now that they are afloat upon the deep, far from land? But such had been the revelation of the power and holiness of Jesus, borne in by the miracle upon Peter's soul, that he felt himself thrown back, morally and in every way, to an infinite distance from Christ. His boat was unworthy to carry, as the house of the centurion was unworthy to receive, such infinite perfections as now he saw in Jesus. It was an apocalypse indeed, revealing, together with the purity and power of Christ, the littleness, the nothingness of his sinful self; that, as Elijah covered his face when the Lord passed by, so Peter feels as if he ought to draw the veil of an infinite distance around himself--the distance which would ever be between him and the Lord, were not His mercy and His love just as infinite as His power.