Revelation 5:8-10

When he took the scroll, the four living creatures and the twenty-four elders fell down before the Lamb. Each one had a harp and golden bowls filled with incense, which are the prayers of the saints. And they sang a new song: You are worthy to take the scroll and to open its seals, because you were slaughtered, and you purchased people for God by your blood from every tribe and language and people and nation. You made them a kingdom and priests to our God, and they will reign on the earth.