Aliya Summary: G‑d instructed Moshe, “Speak to the children of Israel and let them travel!” G‑d told Moshe to stretch out his staff over the sea and divide it, and the Israelites should then proceed through the split sea. “And the Egyptians shall know that I am G‑d, when I will be glorified through Pharaoh, through his chariots, and through his horsemen.” Meanwhile, the pillar of cloud that normally led the Israelites moved to their rear, insulating the Israelites and plunging the Egyptian camp into darkness. Moshe raises his hand above the Sea and G-d causes a powerful eastern wind to blow all night, followed by a parting of the waters. The People of Israel enter the Sea on dry land, between walls of water. The Egyptians quickly pursued them into the sea.
What was the purpose of the strong wind blowing all night? Could not G-d have split the Sea with the snap of a finger? The answer is: Of course. But the night’s preparation for the miracles of the day serve several purposes. A night to ponder what was going on, further enhanced the appreciation of the Children of Israel for what had happened, was happening, and was to happen.