'Pillar of Cloud' in the Bible

The LORD went in front of them by day in a pillar of cloud to lead them along the way, and by night in a pillar of fire to give them light, so they could travel both day and night.

Neither the pillar of cloud by day nor the pillar of fire by night left its place in front of the people.

Then the angel of God, who was going in front of the camp of Israel, moved behind them. The pillar of cloud also moved from in front of them and stood behind them,

When Moses entered the tent, the pillar of cloud would come down and stand at the doorway of the tent while God spoke with Moses.

When all the people saw the pillar of cloud standing at the doorway of the tent, all of them would get up and prostrate themselves in worship, each one at the doorway of his tent.