1. Come quickly, you nations, and assemble (1-16)
One day the Lord will assemble the nations of the world in the valley of Jehoshaphat and judge them. Once, in this valley, King Jehoshaphat had witnessed the Lord's great victory over the nations which had harassed his people (2Ch 20). ('Jehoshaphat' means 'the Lord judges.') The Lord will judge the nations according to how they have treated God's people (5,6,7,19). Those who mistreat God's people have no respect for God. That great final day will be like a great battlefield, like a man trampling and crushing grapes in his winepress (13). The day of the Lord is a day of terror for God's enemies.
2. The Lord will be a refuge (17-21)
In the terrible day of God's wrath, God's people will have a refuge--the Lord himself. For God's people, the day of the Lord is a day of blessing (16,18). The fountain that flows from the Lord's house is the water of life for the nations (Jn 7:38; Rev 22:1).
Application: Lord, when the world's on fire, let me find refuge in you.
One Word: Take refuge in the Lord