Exodus 14:15, 19-20

And Jehovah said unto Moses, Wherefore criest thou unto me? speak unto the children of Israel, that they go forward.

And the angel of God, who went before the camp of Israel, removed and went behind them; and the pillar of cloud removed from before them, and stood behind them: and it came between the camp of Egypt and the camp of Israel; and there was the cloud and the darkness, yet gave it light by night: and the one came not near the other all the night.