Psalms 136:13

To him which divided the Red sea into parts,.... Into two parts, so that the waters of it stood as a wall on the right and left hand of the Israelites, as they passed through; this was done by means of a strong east wind, Exodus 14:21. The Jews have a tradition, which Jarchi, Kimchi, and Arama, make mention of, that the sea was divided into twelve parts, according to the twelve tribes of Israel, and every tribe had a path by itself to walk in; but for this there is no foundation: however, the dividing it into parts was a wonderful work, and a rich display of mercy to Israel;

for his mercy [endureth] for ever; the children of Israel were encompassed about, and in the utmost distress: the rocks were on each side, Pharaoh and his host behind them, the Red sea before them; and so no visible way of escape; but the Lord cut a way for them through the sea, and saved them. The sea is an emblem of this world, which is like a tempestuous troubled sea; where everything is restless, fluctuating, and passing away; where the people of God are tossed with tempests; and where afflictions, like the waves and billows of the sea, come over them one after another; and through which they must pass and enter the kingdom: and God, that wills, orders, and appoints them, sets these proud waves of the sea their bounds, or makes them a calm; and, sooner or later, makes a way through them and out of them, which is owing to his enduring mercy, 1 Corinthians 10:13.