that they: Exodus 14:9, Exodus 13:17-18; Numbers 33:7-8
Pi-hahiroth: Pi̇hachiroth:, "the mouth of Chiroth," as it is rendered by the LXX. Dr. Shaw is of opinion, that Chiroth: denotes the valley which extends from the wilderness of Etham to the Red Sea. "This valley," he observes, "ends at the sea in a small bay made by the eastern extremities of the mountains (of Gewoubee and Attackah, between which the valley lies) which I have been describing, and is called Tiah:-Beni:-Israel:, i.e., the road of the Israelites, by a tradition that is still kept up by the Arabs, of their having passed through it; so it is also called Baideah, from the new and unheard of miracle that was wrought near it, by dividing the Red sea, and destroying therein Pharaoh, his chariots, and his horsemen."
Migdol: The word Migdol: signifies a tower, and hence some have supposed that it was a fortress which served to defend the bay. But the LXX render it Μαγδωλος:, Magdolus, which is mentioned by Herodotus, Hecateus, and others, and is expressly said by Stephanus (de Urb.) to be πολις Αιγυπτον:, "a city of Egypt." This Bochart conjectures to have been the same as Migdol (see the parallel passages). Jeremiah 44:1, Jeremiah 46:14; Ezekiel 29:10, Heb
Baalzephon: This may have been the name of a town or city in which Baal was worshipped; and probably called zephon:, from being situated on the north point of the Red sea, near the present Suez.