Was the LORD displeased against the rivers? was thine anger against the rivers? was thy wrath against the sea, that thou didst ride upon thine horses and thy chariots of salvation?
Was the Lord displeased against the rivers? - `Was the cause of His dividing the Red Sea and Jordan His displeasure against these waters?' The answer to this is tacitly implied in "thy chariots of salvation."
Was thy wrath against the sea, that thou didst ride upon thine horses? 'Nay, it was not displeasure against the waters, but His pleasure in interposing for His people's salvation' (cf. Habakkuk 3:10, "The deep uttered his voice, and lifted up his hands on high,'-namely, the Red Sea, when it made a way through itself for the saving of the people of God).
And thy chariots of salvation - in antithesis to thy foe, Pharaoh's "six hundred chosen chariots," which, notwithstanding their power and numbers, were engulfed in the waters of destruction. God can make the most unlikely means work, for His people's salvation and for their enemies' destruction (Exodus 14:7; Exodus 14:9; Exodus 14:23; Exodus 14:25-28, "The waters returned, and covered the chariots and the horsemen, and all the host of Pharaoh that came into the sea after them (the Israelites); there remained not so much as one of them;" "With the blast of thy nostrils the waters were gathered together, the floods stood upright as an heap," etc. (compare Habakkuk 3:10 here), Exodus 15:3-8; Exodus 15:19). Yahweh's chariots are his angels (Psalms 68:17, "The chariots of God are twenty thousand, even thousands of angels: the Lord is among them"); or the cherubim, or the ark (Joshua 3:13, "As soon as the soles of the feet of the priests that bear the ark of the Lord, the Lord of all the earth, shall rest in the waters of Jordan, the waters ... shall be cut off ... from above; and they shall stand upon an heap." Compare again Habakkuk 3:10 and Joshua 4:7: cf. Song of Solomon 1:9).