Revelation 5:6-8

And I saw in the midst of the throne and of the four living creatures and in the midst of the elders a Lamb standing as though slaughtered, having seven horns and seven eyes, which are the seven spirits of God sent into all the earth. And he came and took the scroll from the right hand of the one who was seated on the throne. And when he took the scroll, the four living creatures and the twenty-four elders fell down before the Lamb, each one of whom had a harp and golden bowls full of incense, which are the prayers of the saints.