Revelation 10:3

And he cried with a loud voice like the roaring of a lion; and when he had cried, seven thunders uttered their voices.

Revelation 4:5

And out of the throne came lightnings, and thunders, and voices: and there were seven lamps of fire burning before the throne; which are the seven spirits of God.

Revelation 8:5

And the angel took the censer, and filled it with fire of the altar, and cast it upon the earth: and there were voices, and thunders, and lightnings, and an earthquake.

Revelation 14:2

And I heard a voice from heaven, like the noise of many waters, and as the sound of great thunder; and I heard the sound of harpers playing on their harps:

Revelation 15:1

And I saw another sign in heaven great and wonderful, ---seven angels, having the seven last plagues, for in them the wrath of God is finished.

Revelation 15:7

And one of the four living beings gave to the seven angels seven golden vials full of the wrath of God, who liveth for ever and ever.

Treasury of Scripture Knowledge

Summary

And cried with a loud voice, as when a lion roareth: and when he had cried, seven thunders uttered their voices.

Bible References

Seven

Revelation 8:5
And the angel took the censer, and filled it with fire of the altar, and cast it upon the earth: and there were voices, and thunders, and lightnings, and an earthquake.
Revelation 14:2
And I heard a voice from heaven, like the noise of many waters, and as the sound of great thunder; and I heard the sound of harpers playing on their harps:
Revelation 15:1
And I saw another sign in heaven great and wonderful, ---seven angels, having the seven last plagues, for in them the wrath of God is finished.