Exodus 14:5-9

5And it was told to 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? 6And he made ready his chariot, and took his people with him: 7And he took six hundred chosen chariots, and all the chariots of Egypt, and captains over every one of them. 8And the LORD hardened the heart of Pharaoh king of Egypt, and he pursued the children of Israel: and the children of Israel went out with an high hand. 9But the Egyptians pursued them, all the horses and chariots of Pharaoh, and his horsemen, and his army, and overtook them encamping by the sea, beside Pihahiroth, before Baalzephon.