Adam Clarke on Isaiah 24:21

On high - upon the earth - That is, the ecclesiastical and civil polity of the Jews, which shall be destroyed. The nation shall continue in a state of depression and dereliction for a long time. The image seems to be taken from the practice of the great monarchs of that time; who, when they had thrown their wretched captives into a dungeon, never gave themselves the trouble of inquiring about them; but let them lie a long time in that miserable condition, wholly destitute of relief, and disregarded. God shall at length revisit and restore his people in the last age: and then the kingdom of God shall be established in such perfection, as wholly to obscure and eclipse the glory of the temporary, typical, preparative kingdom now subsisting.