Isaiah 19:20-21

It will be a sign and a visible reminder in the land of Egypt of the Lord YAHWEH, Commander of Angel Armies. And they will cry out to him when they are oppressed, and he will send a mighty deliverer and champion to their rescue! The Lord YAHWEH will reveal to them who he really is, and the Egyptians will know him intimately. They will worship him with sacrifices and burnt offerings. They will make vows to the Lord YAHWEH, and they will keep them.