Revelation 15:1-2

And I saw another sign in heaven, great and marvellous, seven angels having seven plagues, which are the last, for in them is finished the wrath of God. And I saw as it were a sea of glass mingled with fire; and them that come off victorious from the beast, and from his image, and from the number of his name, standing by the sea of glass, having harps of God.