Revelation 1:20

1:20 The mystery of the seven stars that you saw in my right hand and the seven golden lampstands is this: The seven stars are the angels of the seven churches and the seven lampstands are the seven churches.

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).