Isaiah 19:21, 23

So the LORD will make himself known to the Egyptians, and in that day they will acknowledge the LORD. They will worship with sacrifices and grain offerings; they will make vows to the LORD and keep them.

In that day there will be a highway from Egypt to Assyria. The Assyrians will go to Egypt and the Egyptians to Assyria. The Egyptians and Assyrians will worship together.