Exodus 14:24-25

And in the morning watch, the Lord, looking out on the armies of the Egyptians from the pillar of fire and cloud, sent trouble on the army of the Egyptians; And made the wheels of their war-carriages stiff, so that they had hard work driving them: so the Egyptians said, Let us go in flight from before the face of Israel, for the Lord is fighting for them against the Egyptians.