Exodus 14:19-21 World English Bible (WEB)
19 The angel of God, who went before the camp of Israel, moved and went behind them; and the pillar of cloud moved from before them, and stood behind them. 20 It came between the camp of Egypt and the camp of Israel. There was the cloud and the darkness, yet it gave light by night. One didn’t come near the other all night.
21 Moses stretched out his hand over the sea, and Yahweh caused the sea to go back by a strong east wind all night, and made the sea dry land, and the waters were divided.