John 12:28-29

Father, glorify thy name. Then came a voice from heaven, saying, I have both glorified it, and will glorify it again.

Hebrews 12:18-19

Ye are not come to a tangible mountain, and burning fire, and a thick cloud, and darkness, and tempest,

Revelation 10:3-4

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

Treasury of Scripture Knowledge

Summary

And the sound of the cherubims' wings was heard even to the outer court, as the voice of the Almighty God when he speaketh.

Bible References

The voice

John 12:28
Father, glorify thy name. Then came a voice from heaven, saying, I have both glorified it, and will glorify it again.
Hebrews 12:18
Ye are not come to a tangible mountain, and burning fire, and a thick cloud, and darkness, and tempest,
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.