Isaiah 19:19 - 19:22
19 In that day there will be an altar to Yahweh in the midst of the land of Egypt, and a pillar to Yahweh near its border. 20 And it will become a sign and a witness to Yahweh of hosts in the land of Egypt; for they will cry to Yahweh because of oppressors, and He will send them a Savior and a Champion, and He will deliver them. 21 Thus Yahweh will make Himself known to Egypt, and the Egyptians will know Yahweh in that day. They will even worship with sacrifice and offering, and they will make a vow to Yahweh and pay it. 22 And Yahweh will smite Egypt, smiting but healing; so they will return to Yahweh, and He will be moved by their entreaty and will heal them.