Isaiah 25:2

A city; which is put collectively for cities. He speaks of the cities of strangers, as the following clause explains it, or of enemies of God, and of his people. And under the name cities he comprehends their countries and kingdoms, of which cities are an eminent and commonly the strongest part. A palace of strangers; the royal cities, in which were the palaces of strangers, i.e. of the kings of strange people, or of the Gentiles. It shall never be built; their cities and palaces have been or shall be utterly and irrecoverably destroyed.