Revelation 15:2-3

And I saw something like a sea of glass mixed with fire, and those who had been victorious over the beast and his image and the number of his name, standing on the sea of glass, holding harps of God. And they *sang the song of Moses, the bond-servant of God, and the song of the Lamb, saying, “ G reat and marvelous are Your works, O Lord God, the Almighty; Righteous and true are Your ways, King of the nations!