Exodus 14:18-21

And the Egyptians shall know [without any doubt] and acknowledge that I am the LORD, when I am glorified and honored through Pharaoh, through his war-chariots and his charioteers.” The angel of God, who had been going in front of the camp of Israel, moved and went behind them. The pillar of the cloud moved from in front and stood behind them. So it came between the camp of Egypt and the camp of Israel. It was a cloud along with darkness [even by day to the Egyptians], but it gave light by night [to the Israelites]; so one [army] did not come near the other all night. Then Moses stretched out his hand over the sea; and the LORD swept the sea back by a strong east wind all that night and turned the seabed into dry land, and the waters were divided.