Why will all nations worship God according to the song in Revelation 15?
All nations will come and worship before God because His judgments are made manifest. The song declares His works great and marvelous, His ways just and true, and Him alone holy. Even in tribulation judgments, God is not unfair or unjust; the nations recognize His righteous judgments and glorify His name.
Les explains that the song of Moses and the song of the Lamb in this Revelation vision says, 'Great and marvelous are thy works, Lord God Almighty, just and true are thy ways.' He reminds us that no matter how awful the tribulation experiences are, God is not unfair or unjust; those under judgment get exactly what they deserve. The song goes on, 'Who shall not fear thee, O LORD, and glorify thy name, for thou only art holy. For all nations shall come and worship before thee, for thy judgments are made manifest.' Then John sees the temple of the tabernacle of testimony in heaven opened, and the seven angels come out with the seven final plagues and seven golden bowls full of the wrath of God. Les says these bowl judgments are a symbolic picture of how that wrath will be poured out.