Albert Barnes Commentary Exodus 14

That they turn - that is, away from the wilderness, and go southwards, to the west of the Bitter Lakes, which completely separated them from the desert.

Pi-hahiroth - The place is generally identified with Ajrud, a fortress with a very large well of good water, situated at the foot of an elevation commanding the plain which extends to Suez, at a distance of four leagues. The journey from Etham might occupy two, or even three days.

Migdol - A tower, or fort, the “Maktal” of Egyptian monuments; it is probably to be identified with Bir Suweis, about two miles from Suez.

Baal-zephon - The name under which the Phoenicians, who had a settlement in Lower Egypt at a very ancient period, worshipped their chief Deity. There can be no doubt it was near Kolsum, or Suez. From the text it is clear that the encampment of the Israelites extended over the plain from Pi-hahiroth: their headquarters being between Bir Suweis and the sea opposite to Baal-Zephon. At Ajrud the road branches off in two directions, one leading to the wilderness by a tract, now dry, but in the time of Moses probably impassable (see next note); the other leading to Suez, which was doubtless followed by the Israelites.

They are entangled ... - The original intention of Moses was to go toward Palestine by the wilderness: when that purpose was changed by God’s direction and they moved southwards, Pharaoh, on receiving information, was of course aware that they were completely shut in, since the waters of the Red Sea then extended to the Bitter Lakes.

It is known that the Red Sea at some remote period extended considerably further toward the north than it does at present. In the time of Moses the water north of Kolsum joined the Bitter Lakes, though at present the constant accumulation of sand has covered the intervening space to the extent of 8,000 to 10,000 yards.

The people fled - This was a natural inference from the change of direction, which indicated a determination to escape from Egypt. Up to the time when that information reached Pharaoh, both he and his people understood that the Israelites would return after keeping a festival in the district adjoining Etham. From Etham, the intelligence would be forwarded by the commander of the garrison to Rameses in less than a day, and the cavalry, a highly-disciplined force, would be ready for immediate departure.

Six hundred chosen chariots - The Egyptian army comprised large numbers of chariots, each drawn by two horses, with two men, one bearing the shield and driving, the other fully armed. The horses were thoroughbred, renowned for strength and spirit. Chariots are first represented on the monuments of the 18th dynasty. By all the chariots of Egypt we are to understand all that were stationed in Lower Egypt, most of them probably at Rameses and other frontier garrisons near the headquarters of Pharaoh.

Captains - The word שׁלישׁ shâlı̂ysh — literally “third or thirtieth,” may represent an Egyptian title. The king had about him a council of thirty, each of whom bore a title, Mapu, a “thirty man.” The word occurs frequently in the Books of Kings. David seems to have organized the Shalishim as a distinct corps (see 2 Samuel 23:8, Hebrew text), retaining the old name, and adopting the Egyptian system.

And his horsemen - See Exodus 14:5.