Charles Ellicott Commentary Exodus 14:27

"And Moses stretched forth his hand over the sea, and the sea returned to its strength when the morning appeared; and the Egyptians fled against it; and Jehovah overthrew the Egyptians in the midst of the sea." — Exodus 14:27 (ASV)

When the morning appeared. —This would be about five o’clock. The light showed the Egyptians their danger. The white-crested waves were seen advancing on either side, threatening to fill up the channel. The Egyptians had to race against them, but in vain. Their chariot wheels clogged; themselves and their horses encumbered with heavy armor, they made slow progress over the soft and slimy ground; and while they were still far from shore, the floods were upon them and overwhelmed them. In this way God overthrew the Egyptians in the midst of the sea.