| Barnes' Notes on the Bible Which bringeth forth the chariot and horse - The reference here is, undoubtedly, to the occurrences which are recorded in Exodus 14:4, following, when Pharaoh and his host are said to have followed the Israelites, but were all submerged in the sea. God is said to have brought them forth in accordance with the general statement so often made, that he controls and directs princes and nations (see the note at Isaiah 10:5-6). They shall lie down together - They shall sink together to death, as Pharaoh and his army sunk together in a watery grave. Thou didst blow with thy wind, the sea covered them: They sank as lead in the mighty waters.
Gill's Exposition of the Entire BibleWhich bringeth forth the chariot and the horse, the army and the power,.... Who brought forth the chariots and horses, and the mighty army of Pharaoh, out of Egypt, to pursue the Israelites into the Red sea, where they were drowned. The present tense is put for the future, as in the preceding verse; the future is put for the past tense in the next clause: they shall lie down together, they shall not rise; they lay down in the Red sea, where they sunk to the bottom, and perished, and never rose more, at least to life, nor never will, till the general resurrection: they are extinct, they are quenched as tow; or flax, or as the wick of a candle (p), when put into water, is quenched at once; so the Egyptian, became extinct in the Red sea. Some observe an allusion to the commodity of flax, for which Egypt was famous. Kimchi interprets the whole of the army of Sennacherib, which was brought out of their own land to Jerusalem, and was destroyed in one night by an angel. Aben Ezra of the Chaldeans being brought out to fight with the Persians. But others rather of the army of the Medes and Persians being brought against them, by whom they became extinct as tow or flax. (p) "ut ellychnium" Junius & Tremellius, Piscator, Gataker, Vitringa.
Geneva Study BibleWho bringeth {r} forth the {s} chariot and horse, the army and the power; they shall lie down together, they shall not rise: they are extinct, they are quenched as a wick. (r) When he delivered his people out of Egypt. (s) Pharaoh and his mighty army.
Wesley's Notes 43:17 The chariot - Pharaoh and his chariots and horses, and army. Lay down - In the bottom of the sea. They never rose again to molest the Israelites. Quenched - As the wick of a candle when it is put into the water, is extinguished.
Jamieson-Fausset-Brown Bible Commentary17. the power-the might of the enemies host, every mighty warrior. they shall lie down together-as Pharaoh's army sank "together" in a watery grave.
Matthew Henry's Concise Commentary43:14-21 The deliverance from Babylon is foretold, but there is reference to greater events. The redemption of sinners by Christ, the conversion of the Gentiles, and the recall of the Jews, are described. All that is to be done to rescue sinners, and to bring the believer to glory, is little, compared with that wondrous work of love, the redemption of man. | 
