Exodus 13:20-22

13:20 They journeyed from Sukkoth and camped in Etham, on the edge of the desert. 13:21 Now the Lord was going before them by day in a pillar of cloud to lead them in the way, and by night in a pillar of fire to give them light, so that they could travel day or night. 13:22 He did not remove the pillar of cloud by day nor the pillar of fire by night from before the people.