John hears sounds like the roar of a great multitude in heaven shouting, "Hallelujah!" They praise God for His true and righteous judgments of the harlot. The 24 elders and four living creatures echo "Amen! Hallelujah!"
A voice from the throne calls upon all of God's bond-servants to praise Him because the marriage of the Lamb has come. His last command to John, who is overwhelmed by the vision, is "Worship God."