Revelation 15:2-3

Goodspeed(i) 2 And I saw what looked like a sea of glass mixed with fire, and standing upon the sea of glass those who had come off victorious from the animal and its statue and the number corresponding to its name. They had harps that God had given them, 3 and they were singing the song of Moses, the slave of God, and the song of the Lamb: "Great and marvelous are your doings, Lord God Almighty! Upright and true are your ways, King of the Ages!