Exodus 14:24-25

24So it happened at the early morning watch [before dawn], that the Lord looked down on the army of the Egyptians through the pillar of fire and cloud and put them in a state of confusion.

25He made their chariot wheels hard to turn, and the chariots difficult to drive; so the Egyptians said, “Let us flee from Israel, for the Lord is fighting for them against the Egyptians.”