John 12:28-29

Father, honor your name [in all this].'" Then a voice came out of heaven, saying, "I have honored it, and I will honor it again."

Revelation 11:12

Then the two witnesses/prophets heard a loud voice from heaven saying to them, "Come up here." So, they went up to heaven in a cloud, and their enemies saw them.

Revelation 11:15

Then the seventh angel sounded its trumpet, and there were loud voices in heaven saying, "The kingdom of the world has become the kingdom of our Lord [i.e., God] and of His Christ, and He will rule forever and ever."

Revelation 11:19

Then God's Temple in heaven was opened, and inside of it was seen the Chest containing God's Agreement [i.e., between Him and Israel]. [Immediately] there came lightning flashes, [loud] sounds, rumbling thunder, an earthquake and a severe hailstorm.

Treasury of Scripture Knowledge

Summary

To him that rideth upon the heavens of heavens, which were of old; lo, he doth send out his voice, and that a mighty voice.

Bible References

His voice

John 12:28
Father, honor your name [in all this].'" Then a voice came out of heaven, saying, "I have honored it, and I will honor it again."
Revelation 11:12
Then the two witnesses/prophets heard a loud voice from heaven saying to them, "Come up here." So, they went up to heaven in a cloud, and their enemies saw them.