Revelation 5:8

5:8 and when he had taken the scroll, the four living creatures and the twenty-four elders threw themselves to the ground before the Lamb. Each of them had a harp and golden bowls full of incense (which are the prayers of the saints).

Revelation 5:14

5:14 And the four living creatures were saying “Amen,” and the elders threw themselves to the ground and worshiped.