Till thy people pass over - Not over the Red Sea, for that event had been already celebrated; but over the desert and Jordan, in order to be brought into the promised land.

Fear and dread shall fall upon them.... On the several nations and people before mentioned, especially the Canaanites, which the Targums of Jonathan and Jerusalem interpret of the fear of death, lest the Israelites should fall upon them and destroy them, or God should fight for them, against them, and bring ruin and destruction on them:

by the greatness of thine arm they shall be as still as a stone; awed by the power of God, visible in what he had done for the Israelites, and upon their enemies; they should be like stocks and stones, immovable, have no power to act, nor stir a foot in their own defence, and against Israel, come to invade and possess their land; nor in the least molest them, or stop them in their passage over Jordan, or dispute it with them, but stand like persons thunderstruck, and as stupid as stones, not having any spirit or courage left in them:

till thy people pass over, O Lord, till the people pass over, which thou hast purchased; pass over the brook of Arnon, and the ford of Jabbok, according to the Targum of Jonathan; or the ford of Jabbok, and the ford of Jordan, according to the Jerusalem Targum; the river of Jordan is doubtless literally meant, at least chiefly; and the accomplishment of this prediction may be seen in Joshua 3:15 which was an emblem of the quiet passage of Christ's purchased people, through the ford or river of death, to the Canaan of everlasting rest and happiness: Christ's people are purchased by him, who is able to make the purchase, and had a right to do it, and has actually made it, by giving his flesh, shedding his blood, laying down his life, and giving himself a ransom price for them: these do, and must pass over Jordan, or go through the cold stream of death; it is the way of all the earth, of good men as well as others; it is a passage from one world to another; and there is no getting to the heavenly Canaan without going this way, or through this ford; and all the Lord's purchased people, like Israel, clean pass over through it, not one are left in it; their bodies are raised again, their souls are reunited to them, and both come safe to heaven and happiness: and, for the most part, they have a quiet and easy passage, the enemy is not suffered to disturb them, neither the sins and corruptions of their nature, nor an evil heart of unbelief, nor Satan with his temptations; and the terrors of death are taken away from them; so that they can sit and sing on the shores of eternity, in the view of death and another world, saying, death, where is thy sting? grave, where is thy victory? &c. and this is to be ascribed to the greatness of Jehovah's arm, to his almighty power, on which they lean, and go on comfortably in the wilderness; and by this they are carried safely through death to glory, and it is owing to this that the enemy and the avenger are stilled.

"Fear and dread fall upon them; for the greatness of Thine arm (the adjective גּדול placed as a substantive before the noun) they are dumb (ידּמוּ from דּמם) as stones, till Thy people pass through, Jehovah, till the people which Thou hast purchased pass through." Israel was still on its march to Canaan, an evident proof that Exodus 15:13-15 do not describe what was past, but that future events were foreseen in spirit, and are represented by the use of perfects as being quite as certain as if they had already happened. The singer mentions not only Edom and Moab, but Philistia also, and the inhabitants of Canaan, as enemies who are so paralyzed with terror, as to offer no resistance to the passage of Israel through their territory; whereas the history shows that Edom did oppose their passing through its land, and they were obliged to go round in consequence (Numbers 20:18.; Deuteronomy 2:3, Deuteronomy 2:8), whilst Moab attempted to destroy them through the power of Balaam's curse (Numbers 22:2.); and what the inhabitants of Philistia and Canaan had to fear, was not their passing through, but their conquest of the land.

(Note: The fact that the inhabitants of Philistia and Canaan are described in the same terms as Edom and Moab, is an unquestionable proof that this song was composed at a time when the command to exterminate the Canaanites had not yet been given, and the boundary of the territory to be captured by the Israelites was not yet fixed; in other words, that it was sung by Moses and the Israelites after the passage through the Red Sea. In the words יעבר עד in Exodus 15:16, there is by no means the allusion to, or play upon, the passage through the Jordan, which Knobel introduces.)

We learn, however, from Joshua 2:9-10 and Joshua 9:9, that the report of Israel's miraculous passage through the Red Sea had reached to Canaan, and filled its inhabitants with terror.

Fear and dread shall fall upon them; by the greatness of thine arm they shall be as still as a stone; till thy people pass over, O LORD, till the people pass over, which thou hast purchased.

15:1-21 This song is the most ancient we know of. It is a holy song, to the honour of God, to exalt his name, and celebrate his praise, and his only, not in the least to magnify any man. Holiness to the Lord is in every part of it. It may be considered as typical, and prophetical of the final destruction of the enemies of the church. Happy the people whose God is the Lord. They have work to do, temptations to grapple with, and afflictions to bear, and are weak in themselves; but his grace is their strength. They are often in sorrow, but in him they have comfort; he is their song. Sin, and death, and hell threaten them, but he is, and will be their salvation. The Lord is a God of almighty power, and woe to those that strive with their Maker! He is a God of matchless perfection; he is glorious in holiness; his holiness is his glory. His holiness appears in the hatred of sin, and his wrath against obstinate sinners. It appears in the deliverance of Israel, and his faithfulness to his own promise. He is fearful in praises; that which is matter of praise to the servants of God, is very dreadful to his enemies. He is doing wonders, things out of the common course of nature; wondrous to those in whose favour they are wrought, who are so unworthy, that they had no reason to expect them. There were wonders of power and wonders of grace; in both, God was to be humbly adored.