Kingdoms come and go, you don't have to be a very good oracle to predict the demise of a kingdom.......eventually.
Moab was prophecied against too, the problem with these prophecies is they are set within predictions of the triumph of the Israelites, and the Jewish nation ceased to exist before the demise of Moab and (the city of) Babylon, oops !
We must look harder for a real Bible prophecy that came true, strange ,if it were the "Word of God" it should be peppered with them.