Verse 18. -
The Egyptians shall know that I am the Lord. All Egypt would learn the destruction of the host, and the circumstances under which it occurred, whose miraculous nature could not be concealed. And the consequence would be a wide recognition of the superior might of Jehovah, the God of Israel, over that of any of the Egyptian deities. More than this the Egyptians were not likely to admit under any circumstances.
CHAPTER 14:19-22
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.
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.