In Context

1 And I saw another sign in the heaven, great and wonderful, seven messengers having the seven last plagues, because in these was completed the wrath of God,

2 and I saw as a sea of glass mingled with fire, and those who do gain the victory over the beast, and his image, and his mark, and the number of his name, standing by the sea of the glass, having harps of God,

3 and they sing the song of Moses, servant of God, and the song of the Lamb, saying, 'Great and wonderful are Thy works, O Lord God, the Almighty, righteous and true are Thy ways, O King of saints,

4 who may not fear Thee, O Lord, and glorify Thy name? because Thou alone art kind, because all the nations shall come and bow before Thee, because Thy righteous acts were manifested.'

5 And after these things I saw, and lo, opened was the sanctuary of the tabernacle of the testimony in the heaven;

Revelation 15:3 in Other Translations