Sh'mot 14:1-4 Now the L-RD spoke to Moshe, saying, "Tell the sons of Israel to turn back and camp before Pi-Hachirot, between Migdol and the sea; you shall camp in front of Ba'al-Tz'fon, opposite it, by the sea. For Pharaoh will say of the sons of Israel, 'They are wandering aimlessly in the land; the wilderness has shut them in.' "Thus I will harden Pharaoh's heart, and he will chase after them; and I will be honored through Pharaoh and all his army, and the Egyptians will know that I am the L-RD." And they did so.
They are wandering aimlessly in the land - This is a ruse. HaShem is deliberately leading Pharaoh and his army into a trap.
The sea - This is the "Yam Suf". It is the name used for the Red Sea and the two arms of the Red sea, the Gulf of Suez and the Gulf of Eilat. For years it has been believed that HaShem parted the waters of the Gulf of Suez. Recent archeological investigations have revealed that the more probable crossing was the Gulf of Eilat (Gulf of Aqaba).
Pi-Hachirot - means "the mouth of the gorges"
Sh'mot 14:5-9 When the king of Egypt was told that the people had fled, Pharaoh and his servants had a change of heart toward the people, and they said, "What is this we have done, that we have let Israel go from serving us?" So he made his chariot ready and took his people with him; and he took six hundred select chariots, and all the other chariots of Egypt with officers over all of them. And the L-RD hardened the heart of Pharaoh, king of Egypt, and he chased after the sons of Israel as the sons of Israel were going out boldly. Then the Egyptians chased after them with all the horses and chariots of Pharaoh, his horsemen and his army, and they overtook them camping by the sea, beside Pi-Hachirot, in front of Ba'al-Tz'fon.
The corresponding letter to this chapter is Nun-FAITHFULNESS; soul; DOWNFALL and RISING AGAIN. In this chapter we see the Faithfulness of G-d, the final downfall of the Egyptians and nation of Israel rising victorious.
Sh'mot 14:10-11 And as Pharaoh drew near, the sons of Israel looked up, and saw the Egyptians were marching after them, and they became very frightened; so the sons of Israel cried out to the L-RD. Then they said to Moshe, "Is it because there were no graves in Egypt that you have taken us away to die in the wilderness?
Why have you dealt with us in this way, bringing us out of Egypt?
Israel faces death and destruction. At one time or another we all have complained about our circumstances. Again, we are to live by faith.
Romans 1:16-17 For I am not ashamed of the gospel, for it is the power of G-d for salvation to everyone who believes, to the Jew first and also to the Greek. For in it the righteousness of G-d is revealed from faith to faith; as it is written, "But the righteous man shall live by faith." NAS
Sh'mot 14:12 "Is this not the word that we spoke to you in Egypt, saying, 'Leave us alone that we may serve the Egyptians'? For it would have been better for us to serve the Egyptians than to die in the wilderness."
Despite the lack of faith G-d is still faithful to Israel.