Exodus 40:34-38

34Then the cloud covered the Tabernacle, and the glory of the Lord filled the Tabernacle.

35Moses could no longer enter the Tabernacle because the cloud had settled down over it, and the glory of the Lord filled the Tabernacle.

36Now whenever the cloud lifted from the Tabernacle, the people of Israel would set out on their journey, following it.

37But if the cloud did not rise, they remained where they were until it lifted.

38The cloud of the Lord hovered over the Tabernacle during the day, and at night fire glowed inside the cloud so the whole family of Israel could see it. This continued throughout all their journeys.