In that day, there will be an altar to Yahweh in the middle of the land of Egypt and a standing-stone to Yahweh at its border. Bible

“and a standing-stone to Yahweh.” This amazing prophecy is that in the future, when Jesus rules the earth, Egypt, which has always had dozens and dozens of different gods and goddesses, will worship God and set up a standing-stone as a testimony and witness of Yahweh at its border. [For more on standing-stones, see commentary on Gen. 28:18].

Commentary for: Isaiah 19:19