John 12:29

The crowd that stood by and heard it, said that there had been thunder. Others said, "An angel spoke to him."

Acts 23:8-9

For the Sadducees maintain that there is no resurrection, and neither angel nor spirit; but the Pharisees acknowledge the existence of both.

Revelation 6:1

And when the Lamb broke one of the seven seals I saw it, and I heard one of the four living creatures say, as if in a voice of thunder, "Come."

Revelation 8:5

So the angel took the censer and filled it with fire from the altar and flung it to the earth; and there followed peals of thunder, and voices, and flashes of lightning, and an earthquake.

Revelation 11:19

Then the doors of God's sanctuary in Heaven were opened, and the Ark, in which His Covenant was, was seen in His sanctuary; and there came flashes of lightning, and voices, and peals of thunder, and an earthquake, and heavy hail.

Revelation 14:2

And I heard music from Heaven which resembled the sound of many waters and the roar of loud thunder; and the music which I heard was like that of harpists playing upon their harps.

Revelation 18:1-2

After these things I saw another angel coming down from Heaven, armed with great power. The earth shone with his splendor,

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 maintain that there is no resurrection, and neither angel nor spirit; but the Pharisees acknowledge the existence of both.
Revelation 18:1
After these things I saw another angel coming down from Heaven, armed with great power. The earth shone with his splendor,