Isaiah 19:20-21

And it will be for a sign and for a witness to the LORD of hosts in the land of Egypt; for they will cry to the LORD because of the oppressors, and He will send them a Savior and a Mighty One, and He will deliver them. Then the LORD will be known to Egypt, and the Egyptians will know the LORD in that day, and will make sacrifice and offering; yes, they will make a vow to the LORD and perform it.