Isaiah 19:21

19In that day, there will be an altar to the LORD in the middle of the land of Egypt, and a pillar to the LORD at its border.

20It will be for a sign and for a witness to the LORD of Armies in the land of Egypt; for they will cry to the LORD because of oppressors, and he will send them a savior and a defender, and he will deliver them.

21The LORD will be known to Egypt, and the Egyptians will know the LORD in that day. Yes, they will worship with sacrifice and offering, and will vow a vow to the LORD, and will perform it.

22The LORD will strike Egypt, striking and healing. They will return to the LORD, and he will be entreated by them, and will heal them.

23In that day there will be a highway out of Egypt to Assyria, and the Assyrian shall come into Egypt, and the Egyptian into Assyria; and the Egyptians will worship with the Assyrians.