John Gills Exposition of the Bible Commentary - Psalms 136:15
But overthrew Pharaoh and his host in the Red sea ,.... In the same sea which was parted for the Israelites, and through which they passed safely as on dry land; into which Pharaoh and his army entering in pursuit of them in their chariots, the Lord "shook" F21 נער "excussit", V. L. Pagninus, Montanus, Junius & Tremellius, Piscator, &c.; him and them out of them, as the word signifies; and causing the waters to return and cover them; they were drowned in them, Exodus 14:28 ... read more
Matthew Henry's Complete Commentary - Psalms 136:10-22
The great things God for Israel, when he first formed them into a people, and set up his kingdom among them, are here mentioned, as often elsewhere in the psalms, as instances both of the power of God and of the particular kindness he had for Israel. See Ps. 135:8 1. He brought them out of Egypt, Ps. 136:10-12. That was a mercy which endured long to them, and our redemption by Christ, which was typified by that, does indeed endure for ever, for it is an eternal redemption. Of all the plagues... read more