Isaiah continues prophesying about the future, even into the Kingdom Age of Christ. He does this by singling out nations involved with Judah in his day. This time it is Ethiopia, Egypt, Assyria (modern-day Iraq) and Philistia (no longer a people). It is Ethiopia, Egypt, and Iraq, that are most remarkable here. While Isaiah is telling that element in Judah who want an alliance with Ethiopia and Egypt to thwart the Assyrian aggression, God does not want it, and will instead judge them also. But Isaiah says, “in that day,” the day of Messiah’s reign on earth – the Millennial Age, these who were once enemies, will come to Jerusalem to worship Christ together.