What Does Exodus 14:4 Mean?

"And I will harden Pharaoh's heart, and he will pursue them, and I will get glory over Pharaoh and all his host, and the Egyptians shall know that I am the LORD." And they did so. The tenth plague did not fully close the Pharaoh-confrontation narrative: Pharaoh released Israel in the midnight hour of grief (Exodus 12:31), but the final encounter between YHWH and Pharaoh is at the sea.

The hardening of Pharaoh's heart for the sea pursuit is the eleventh and final hardening: the one that will end in Pharaoh's army being destroyed rather than merely experiencing a plague and recovering. The sea is the end of the Pharaoh story; the hardening that sends him to the sea is the last divine act in the confrontation arc.

"I will get glory over Pharaoh and all his host" is the sea crossing's stated divine purpose: glory (Hebrew: ekabdah, I will be honored/glorified/made heavy). The same word for YHWH's glory in the tabernacle, the kabod that filled the tent of meeting, is the word for what YHWH gets from defeating Pharaoh at the sea. The glory YHWH gets from the sea crossing is the recognition of his incomparable power over human armies, sea, and the Egyptian divine system. Egypt's military machine annihilated by the sea is YHWH's kabod expressed in historical action.

"The Egyptians shall know that I am the LORD" returns the knowledge-formula to the Egyptian audience for the last time in the Exodus. Earlier plagues announced their knowledge-purpose: "that you may know that I am the LORD" (Exodus 7:17; 8:10; etc.). The sea crossing's knowledge-purpose is for Egypt as a whole: the army that pursues Israel to the sea will become Egypt's witness, through their own deaths, that the God who opened the sea is the LORD. The "Egyptians shall know" from the sea crossing will propagate through Canaan (as Rahab's testimony in Joshua 2:9-11 confirms).