Only God knows why he sometimes answers these prayers in the moment and other times, like with the Hebrews’ enslavement in Egypt, or blacks’ enslavement in the United States, it takes centuries. But the psalmist rests in the truth that God is King for ever and ever and that these wicked nations will perish from the land. God is more powerful than the wicked nations who oppress and enslave and exploit. He was more powerful than Egypt, Assyria, Babylon, Persia, and Rome. And he’s certainly more powerful than the United States and the rest of today’s world powers.