Joel 3:19,20

Egypt shall be a desolation, and Edom, &c. These two people were remarkable for the spite they bore to the Jews. The Egyptians were their oppressors when they first became a nation, and afterward exercised great cruelties upon them, during the reign of the Egyptian kings who were Alexander's successors. The Idumeans are often reproved and threatened with judgments by the prophets, for the malice they took all occasions to vent against the Israelites, though nearly related to them: see the margin. These two nations, therefore, are taken, in a general sense, for the enemies of God's people. But Judah The redeemed of the Lord, his church, shall dwell, or continue, for ever Free from the annoyance of enemies. The Christian Church is evidently intended, including probably the conversion and final restoration of the Jews.