John 12:29

Then the multitudes standing, hearing, said, That it was thunder; others said, An angel has spoken to Him.

Acts 23:8-9

For the Sadducees indeed say that there is no resurrection, neither angel, nor spirit: but the Pharisees confess both.

Revelation 6:1

And I saw when the Lamb opened the first of the seven seals, and I heard one of the four living creatures speaking, like a voice of thunder, Come.

Revelation 8:5

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

Revelation 11:19

And the temple of God was opened in the heaven and the ark of His covenant was seen in his temple, and there were lightnings, and voices, and thunders, and earthquakes, and a great hail.

Revelation 14:2

And I heard a voice from heaven, as the sound of many waters, and as the sound of a great thunder: and the sound which I heard was as the sound of harpers harping with their harps:

Revelation 18:1-2

After these things I saw another angel coming down out of the heaven, having great authority; and the earth was lighted with his glory.

Treasury of Scripture Knowledge

Summary

The people therefore, that stood by, and heard it, said that it thundered: others said, An angel spake to him.

Bible References

An angel

Acts 23:8
For the Sadducees indeed say that there is no resurrection, neither angel, nor spirit: but the Pharisees confess both.
Revelation 18:1
After these things I saw another angel coming down out of the heaven, having great authority; and the earth was lighted with his glory.