And I saw another sign in heaven, great and marvelous, seven angels having the seven last plagues; for in them is completed the wrath of God. And I saw as it were a sea of glass mingled with fire: and them that had gotten the victory over the beast, and over his image, and over his mark, and over the number of his name, stand on the sea of glass, having the harps of God.

And they sing the song of Moses the servant of God, and the song of the Lamb, saying, Great and marvelous are your works, Lord God Almighty; just and true are your ways, you King of saints. Who shall not fear you, O Lord, and glorify your name? for you only are holy: for all nations shall come and worship before you; for your judgments are made manifest.
(Revelation 15:1-4)