(Isaiah 19) Every tribe and people

In that day Israel will be one of three with Egypt and Assyria blessing in the midst of the land, whom the Lord of hosts shall bless, saying, “Blessed  is  Egypt My people, and Assyria the work of My hands, and Israel My inheritance.”

I am at a loss to really understand what is being said here. Certainly God is not willing that any should perish, but that all—from every tribe and people—should come to repentance.