Exodus 13:21 in the King James Version
And the LORD went before them by day in a pillar of a cloud, to lead them the way; and by night in a pillar of fire, to give them light; to go by day and night:
Context
20 They took their journey from Succoth, and encamped in Etham, in the edge of the wilderness.
21 The LORD went before them by day in a pillar of cloud, to lead them on their way, and by night in a pillar of fire, to give them light, that they might go by day and by night:
22 the pillar of cloud by day, and the pillar of fire by night, didn’t depart from before the people.