Exodus 14:19-21 New International Version - UK (NIVUK)
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.
21 Then Moses stretched out his hand over the sea, and all that night the Lord drove the sea back with a strong east wind and turned it into dry land. The waters were divided,