Hebrews 12:21

and so terrible was the appearance, Moses said, "I am exceedingly frightened and in fear!"

Hebrews 12:18-19

For ye have not come to a mount that is touched and burning with fire, and to blackness, and darkness, and tempest,

Revelation 4:1

After these things I saw, and, behold, a door opened in Heaven; and the first voice which I heard was as a voice of a trumpet speaking with me, saying, "Come up hither, and I will show you the things which must take place after these."

Revelation 4:5

And out of the throne proceed lightnings and voices and thunderings; and there were seven lamps of fire burning before the throne, which are the seven Spirits of God;

Revelation 8:5

And the angel has taken the censer; and he filled it with the fire of the altar, and cast it to the earth; and there followed thunders, and voices, and lightnings, and an earthquake.

Revelation 11:19

And the Temple of God that is in Heaven was opened, and the ark of His covenant was seen in His Temple; and there were lightnings, and voices, and thunders, and an earthquake, and great hail.

Revelation 1:10

I was in the Spirit on the Lord's day; and I heard behind me a great voice as of a trumpet,

Treasury of Scripture Knowledge

Summary

And it came to pass on the third day in the morning, that there were thunders and lightnings, and a thick cloud upon the mount, and the voice of the trumpet exceeding loud; so that all the people that was in the camp trembled.

All the people

Bible References

Thunders

Hebrews 12:18
For ye have not come to a mount that is touched and burning with fire, and to blackness, and darkness, and tempest,
Revelation 4:5
And out of the throne proceed lightnings and voices and thunderings; and there were seven lamps of fire burning before the throne, which are the seven Spirits of God;
Revelation 8:5
And the angel has taken the censer; and he filled it with the fire of the altar, and cast it to the earth; and there followed thunders, and voices, and lightnings, and an earthquake.
Revelation 11:19
And the Temple of God that is in Heaven was opened, and the ark of His covenant was seen in His Temple; and there were lightnings, and voices, and thunders, and an earthquake, and great hail.

All the people

Hebrews 12:21
and so terrible was the appearance, Moses said, "I am exceedingly frightened and in fear!"