God's judgment against the enemies of his people.
Joel 3:1 For behold, in those days, and in that time, when I shall turn again the captivity of Judah and Jerusalem, Joel 3:2 I will also gather all the nations, and will bring them down into the valley of Jehoshaphat, and I will enter into judgment with them there on account of my people and mine inheritance, Israel, whom they have scattered among the nations: and they have parted my land; Joel 3:3 and they have cast lots for my people, and have given a boy for a harlot, and sold a girl for wine, and have drunk [it]. Joel 3:4 Yea also, what have ye to do with me, O Tyre and Zidon, and all the districts of Philistia? Will ye render me a recompence? But if ye recompense me, swiftly [and] speedily will I bring your recompence upon your own head; Joel 3:5 because ye have taken my silver and my gold, and have carried into your temples my beautiful pleasant things, Joel 3:6 and the children of Judah and the children of Jerusalem have ye sold unto the children of the Greeks, that ye might remove them far from their border. Joel 3:7 Behold, I will raise them up out of the place whither ye have sold them, and will bring your recompence upon your own head. Joel 3:8 And I will sell your sons and your daughters into the hand of the children of Judah, and they shall sell them to the Sabeans, to a nation far off: for Jehovah hath spoken.
God will be known in his judgment.
Joel 3:9 Proclaim this among the nations: prepare war, arouse the mighty men, let all the men of war draw near, let them come up. Joel 3:10 Beat your ploughshares into swords, and your pruning-knives into spears; let the weak say, I am strong. Joel 3:11 Haste ye and come, all ye nations round about, and gather yourselves together. Thither cause thy mighty ones to come down, O Jehovah. Joel 3:12 Let the nations rouse themselves, and come up to the valley of Jehoshaphat; for there will I sit to judge all the nations round about. Joel 3:13 Put in the sickle, for the harvest is ripe: come, get you down, for the press is full, the vats overflow; for their wickedness is great. Joel 3:14 Multitudes, multitudes in the valley of decision! For the day of Jehovah is at hand in the valley of decision. Joel 3:15 The sun and the moon shall be darkened, and the stars shall withdraw their shining. Joel 3:16 And Jehovah will roar from Zion, and utter his voice from Jerusalem; and the heavens and the earth shall shake: and Jehovah will be a shelter for his people, and the refuge of the children of Israel. Joel 3:17 And ye shall know that I, Jehovah, [am] your God, dwelling in Zion, my holy mountain; and Jerusalem shall be holy, and no strangers shall pass through her any more.
His blessing upon the Church.
Joel 3:18 And it shall come to pass in that day, that the mountains shall drop down new wine, and the hills shall flow with milk, and all the water-courses of Judah shall flow with waters; and a fountain shall come forth from the house of Jehovah, and shall water the valley of Shittim. Joel 3:19 Egypt shall be a desolation, and Edom shall be a desolate wilderness, for the violence against the children of Judah, in that they have shed innocent blood in their land. Joel 3:20 But Judah shall abide for ever, and Jerusalem from generation to generation. Joel 3:21 And I will purge them from the blood from which I had not purged them: for Jehovah dwelleth in Zion.