Exodus 14:6-10

So Pharaoh harnessed horses to his war-chariots [for battle] and took his army with him; and he took six hundred chosen war-chariots, and all the other war-chariots of Egypt with fighting charioteers over all of them. The LORD hardened the heart of Pharaoh, king of Egypt, and he pursued the Israelites, as they were leaving confidently and defiantly. [Acts 13:17] The Egyptians chased them with all the horses and war-chariots of Pharaoh, his horsemen and his army, and they overtook them as they camped by the sea, beside Pi-hahiroth, in front of Baal-zephon. As Pharaoh approached, the Israelites looked up and saw the Egyptians marching after them, and they were very frightened; so the Israelites cried out to the LORD.