Revelation 5:2
5:2 And I saw a powerful angel proclaiming in a loud voice: “Who is worthy to open the scroll and to break its seals?”
Revelation 10:3
10:3 Then
he shouted in a loud voice like a lion roaring, and when he shouted, the seven thunders sounded their voices.
Revelation 16:4
16:4 Then the third angel poured out his bowl on the rivers and the springs of water, and they turned into blood.
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.