Exodus 13:15-19

And it came about, when Pharaoh was stubborn about letting us go, that the Lord put to death every firstborn in the land of Egypt, from human firstborns to animal firstborns. Therefore, I sacrifice to the Lord the males, every firstborn of a womb, but every firstborn of my sons I redeem.’

So it shall serve as a sign on your hand and as phylacteries on your forehead, for with a powerful hand the Lord brought us out of Egypt.” God Leads the People

Now when Pharaoh had let the people go, God did not lead them by the way of the land of the Philistines, even though it was near; for God said, “The people might change their minds when they see war, and return to Egypt.”

Therefore God led the people around by way of the wilderness to the Red Sea; and the sons of Israel went up in battle formation from the land of Egypt.

And Moses took the bones of Joseph with him, for he had made the sons of Israel solemnly swear, saying, “God will certainly take care of you, and you shall carry my bones from here with you.”