Joel 3:12-13

The Lord urged the nations to rouse themselves and to assemble in the valley of Jehoshaphat (cf. Joel 3:2) because it was there that He would sit in judgment on them. He compared this judgment to harvesting grain with a sickle and to treading grapes in a vat (cf. Isaiah 17:5; Isaiah 63:1-6; Revelation 14:14-20). As grapes squirt juice when trodden, so the nations will give up the wickedness with which they have been full (cf. Joel 2:24).

This scene of divine warfare corresponds to the battle of Armageddon at the end of the Tribulation (cf. Revelation 14:14-20; Revelation 16:16; Revelation 19:11-21). The judgment of the nations following Christ’s second coming (Matthew 25:31-46) will not involve warfare.