Exodus 14:1

Speak unto the children of Israel, that they turn and encamp before Pi-hahiroth, between Migdol and the sea, over against Baal-zephon: before it shall ye encamp by the sea.

For Pharaoh will say of the children of Israel, They are entangled in the land, the wilderness hath shut them in.

And I will harden Pharaoh's heart, that he shall follow after them; and I will be honoured upon Pharaoh, and upon all his host; that the Egyptians may know that I am the LORD. And they did so.

And it was told the king of Egypt that the people fled: and the heart of Pharaoh and of his servants was turned against the people, and they said, Why have we done this, that we have let Israel go from serving us?