God's judgment against the enemies of his people.
Joel 3:1 For behold, in those days, and in that time, when I shall bring again the captivity of Judah and Jerusalem, Joel 3:2 I will also gather all nations, and will bring them down into the valley of Jehoshaphat, and will plead with them there for my people and [for] my heritage Israel, whom they have scattered among the nations, and divided 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, that they might drink. Joel 3:4 Yes, and what have ye to do with me, O Tyre, and Zidon, and all the coasts of Palestine? will ye render me a recompense? and if ye recompense me, swiftly [and] speedily I will return your recompense upon your own head; Joel 3:5 Because ye have taken my silver and my gold, and have carried into your temples my goodly pleasant things. Joel 3:6 The children also of Judah and the children of Jerusalem have ye sold to the Grecians, that ye might remove them far from their border. Joel 3:7 Behold, I will raise them out of the place whither ye have sold them, and will return your recompense 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 people far off: for the LORD hath spoken [it].
God will be known in his judgment.
Joel 3:9 Proclaim ye this among the Gentiles; Prepare war, wake up the mighty men, let all the men of war draw near; let them come up: Joel 3:10 Beat your plow-shares into swords, and your pruning-hooks into spears: let the weak say, I [am] strong. Joel 3:11 Assemble yourselves, and come, all ye heathen, and gather yourselves together around: thither cause thy mighty ones to come down, O LORD. Joel 3:12 Let the heathen be awakened, and come up to the valley of Jehoshaphat: for there will I sit to judge all the heathen on every side. Joel 3:13 Put ye in the sickle, for the harvest is ripe: come, go 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 the LORD [is] near 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 The LORD also will roar out of Zion, and utter his voice from Jerusalem; and the heavens and the earth shall shake; but the LORD [will be] the hope of his people, and the strength of the children of Israel. Joel 3:17 So shall ye know that I [am] the LORD your God dwelling in Zion, my holy mountain: then shall Jerusalem be holy, and there shall no strangers 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 rivers of Judah shall flow with waters, and a fountain shall come forth from the house of the LORD, 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, because they have shed innocent blood in their land. Joel 3:20 But Judah shall dwell for ever, and Jerusalem from generation to generation. Joel 3:21 For I will cleanse their blood [that] I have not cleansed: for the LORD dwelleth in Zion.