Pillar of fire by night
The pillar of fire by night remained with them until they reached the promised land. The pillar of fire was a symbol of divine guidance.
Background Reading:
Exodus 13:21-22
Pillar of Fire by night
21 By day the LORD went ahead of them in a pillar of cloud to guide them on their way and by night in a pillar of fire to give them light, so that they could travel by day or night. 22 Neither the pillar of cloud by day nor the pillar of fire by night left its place in front of the people.