When the king of Egypt was told that the people had fled, Pharaoh and his officials changed their minds about the people and said: "What have we done? We have released Israel from serving us."
References for Exodus 14:5
So he got his chariot ready and took his troops with him;
References for Exodus 14:6
he took 600 of the best chariots and all the rest of the chariots of Egypt, with officers in each one.
The Lord hardened the heart of Pharaoh king of Egypt, and he pursued the Israelites, who were going out triumphantly.
References for Exodus 14:8
The Egyptians-all Pharaoh's horses and chariots, his horsemen, and his army-chased after them and caught up with them as they camped by the sea beside Pi-hahiroth, in front of Baal-zephon.
References for Exodus 14:9
As Pharaoh approached, the Israelites looked up and saw the Egyptians coming after them. Then the Israelites were terrified and cried out to the Lord for help.
They said to Moses: "Is it because there are no graves in Egypt that you took us to die in the wilderness? What have you done to us by bringing us out of Egypt?
Isn't this what we told you in Egypt: Leave us alone so that we may serve the Egyptians? It would have been better for us to serve the Egyptians than to die in the wilderness."
But Moses said to the people, "Don't be afraid. Stand firm and see the Lord's salvation He will provide for you today; for the Egyptians you see today, you will never see again.
The Lord will fight for you; you must be quiet."
The Lord said to Moses, "Why are you crying out to Me? Tell the Israelites to break camp.
References for Exodus 14:15