Exodus 13:21
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:
Torrey's Topical Textbook—AKJV

Psalm 78:14
In the daytime also he led them with a cloud, and all the night with a light of fire.
Torrey's Topical Textbook—AKJV