Albert Barnes Commentary Exodus 14:28

"And the waters returned, and covered the chariots, and the horsemen, even all the host of Pharaoh that went in after them into the sea; there remained not so much as one of them." — Exodus 14:28 (ASV)

Not so much as one of them - Escape would be impossible (Exodus 14:26). Pharaoh’s destruction, independent of the distinct statement of the Psalmist (Psalms 136:15), was in fact inevitable. The station of the king was in the vanguard: on every monument the Pharaoh is represented as the leader of the army.

The death of the Pharaoh, and the entire loss of the chariotry and cavalry, accounts for the undisturbed retreat of the Israelites through a district then subject to Egypt and easily accessible to their forces. If, as appears probable, Tothmosis II was the Pharaoh, the first recorded expedition into the Peninsula took place 17 years after his death; and 22 years elapsed before any measures were taken to recover the lost ascendancy of Egypt in Syria.

So complete, so marvelous was the deliverance: thus the Israelites were baptized unto Moses in the cloud and in the sea (1 Corinthians 10:2).

When they left Baal-Zephon they were separated finally from the idolatry of Egypt: when they passed the Red Sea their independence of its power was sealed; their life as a nation then began, a life inseparable from that time forward from belief in Yahweh and His servant Moses, only to be merged in the higher life revealed by His Son.