Exodus 14:18-20 New International Version - UK (NIVUK)
18 The Egyptians will know that I am the Lord when I gain glory through Pharaoh, his chariots and his horsemen.’
19 Then the angel of God, who had been travelling in front of Israel’s army, withdrew and went behind them. The pillar of cloud also moved from in front and stood behind them, 20 coming between the armies of Egypt and Israel. Throughout the night the cloud brought darkness to the one side and light to the other; so neither went near the other all night long.