Shall know that I am the Lord - Pharaoh had just recovered from the consternation and confusion with which the late plagues had overwhelmed him, and now he is emboldened to pursue after Israel; and God is determined to make his overthrow so signal by such an exertion of omnipotence, that he shall get himself honor by this miraculous act, and that the Egyptians shall know, i.e., acknowledge, that he is Jehovah, the omnipotent, self-existing, eternal God.

And the Egyptians shall know that I am the Lord,.... Acknowledge him to be Jehovah, the self-existent, eternal, and immutable Being, the one only living and true God, who is wise and powerful, faithful, just, and true; that is, those Egyptians that were left behind in Egypt, hearing what was done at the Red sea; for as for those that came with Pharaoh, they all perished to a man:

when I have gotten me honour upon Pharaoh, upon his chariots, and upon his horsemen; by casting them into the sea, and drowning them there, thereby showing himself to be mightier than he.

And the Egyptians shall know that I am the LORD, when I have gotten me honor upon Pharaoh, upon his chariots, and upon his horsemen.

14:15-20 Moses' silent prayers of faith prevailed more with God than Israel's loud outcries of fear. The pillar of cloud and fire came behind them, where they needed a guard, and it was a wall between them and their enemies. The word and providence of God have a black and dark side toward sin and sinners, but a bright and pleasant side toward the people of the Lord. He, who divided between light and darkness, Ge 1:4, allotted darkness to the Egyptians, and light to the Israelites. Such a difference there will be between the inheritance of the saints in light, and that utter darkness which will be the portion of hypocrites for ever.