Isaiah 19:18-22

In that day five cities in the land of Egypt will be speaking the language of Canaan and swearing allegiance to the LORD of hosts; one will be called the City of Destruction. In that day there will be an altar to the LORD in the midst of the land of Egypt, and a pillar to the LORD near its border. It will become a sign and a witness to the LORD of hosts in the land of Egypt; for they will cry to the LORD because of oppressors, and He will send them a Savior and a Champion, and He will deliver them. Thus the LORD will make Himself known to Egypt, and the Egyptians will know the LORD in that day. They will even worship with sacrifice and offering, and will make a vow to the LORD and perform it. The LORD will strike Egypt, striking but healing; so they will return to the LORD, and He will respond to them and will heal them.