13:17-20 There were two ways from Egypt to Canaan. One was only a few days' journey; the other was much further about, through the wilderness, and that was the way in which God chose to lead his people Israel. The Egyptians were to be drowned in the Red sea; the Israelites were to be humbled and proved in the wilderness. God's way is the right way, though it seems about. If we think he leads not his people the nearest way, yet we may be sure he leads them the best way, and so it will appear when we come to our journey's end. The Philistines were powerful enemies; it was needful that the Israelites should be prepared for the wars of Canaan, by passing through the difficulties of the wilderness. Thus God proportions his people's trials to their strength, 1Co 10:13. They went up in good order. They went up in five in a rank, some; in five bands, so others, which it seems rather to their faith and hope, that God would bring them to Canaan, in expectation of which they carried these bones with them while in the desert.

18. God led the people about, through the way of the wilderness of the Red Sea, &c.—This wondrous expanse of water is a gulf of the Indian ocean. It was called in Hebrew "the weedy sea," from the forest of marine plants with which it abounds. But the name of the Red Sea is not so easily traced. Some think it was given from its contiguity to the countries of Edom ("red"); others derive it from its coral rocks; while a third class ascribe the origin of the name to an extremely red appearance of the water in some parts, caused by a numberless multitude of very small mollusca. This sea, at its northern extremity, separates into two smaller inlets—the eastern called anciently the Elanitic gulf, now the gulf of Akaba; and the western the Heroopolite gulf, now the gulf of Suez, which, there can be no doubt, extended much more to the north anciently than it does now. It was toward the latter the Israelites marched.

went up harnessed—that is, girded, equipped for a long journey. (See Ps 105:37). The Margin renders it "five in a rank," meaning obviously five large divisions, under five presiding officers, according to the usages of all caravans; and a spectacle of such a mighty and motley multitude must have presented an imposing appearance, and its orderly progress could have been effected only by the superintending influence of God.