Exodus 13:18-22

but God led the people about, by the way of the wilderness by the Red Sea: and the children of Israel went up armed out of the land of Egypt. And Moses took the bones of Joseph with him: for he had straitly sworn the children of Israel, saying, God will surely visit you; and ye shall carry up my bones away hence with you. And they took their journey from Succoth, and encamped in Etham, in the edge of the wilderness. And Jehovah went before them by day in a pillar of cloud, to lead them the way, and by night in a pillar of fire, to give them light; that they might go by day and by night: the pillar of cloud by day, and the pillar of fire by night, departed not from before the people.