Revelation 15:2-3

2And I saw as a glass sea, mingled with fire, and those that had gained the victory over the beast, and over its image, and over the number of its name, standing upon the glass sea, having harps of 1God.

3And they sing the song of Moses bondman of 2God, and the song of the Lamb, saying, Great and wonderful [are] thy works, Lord 3God Almighty; righteous and true [are] thy ways, O King of nations.