Exodus 13:21-22

13:21 Now the Lord was going before them by day in a pillar of cloud to lead them in the way, and by night in a pillar of fire to give them light, so that they could travel day or night. 13:22 He did not remove the pillar of cloud by day nor the pillar of fire by night from before the people.

Exodus 14:19

14:19 The angel of God, who was going before the camp of Israel, moved and went behind them, and the pillar of cloud moved from before them and stood behind them.

Exodus 14:24

14:24 In the morning watch the Lord looked down on the Egyptian army through the pillar of fire and cloud, and he threw the Egyptian army into a panic.