New Revised Standard Version
On the morning of the third day there was thunder and lightning, as well as a thick cloud on the mountain, and a blast of a trumpet so loud that all the people who were in the camp trembled.

Contemporary English Version
On the morning of the third day there was thunder and lightning. A thick cloud covered the mountain, a loud trumpet blast was heard, and everyone in camp trembled with fear.

New American Bible
On the morning of the third day there were peals of thunder and lightning, and a heavy cloud over the mountain, and a very loud blast of the shofar, so that all the people in the camp trembled.

Douay-Rheims Bible
And now the third day was come, and the morning appeared: and behold thunders began to be heard, and lightning to flash, and a very thick cloud to cover the mount, and the noise of the trumpet sounded exceeding loud; and the people that was in the camp, feared.

And now the third day was come, and the morning appeared: and behold thunders began to be heard, and lightning to flash, and a very thick cloud to cover the mount, and the noise of the trumpet sounded exceeding loud; and the people that was in the camp, feared.

thunders

Exodus 9:23,28,29 And Moses stretched forth his rod towards heaven, and the Lord sent thunder and hail, and lightnings running along the ground: and the Lord rained hail upon the land of Egypt. . . .

Exodus 20:18 And all the people saw the voices and the flames, and the sound of the trumpet, and the mount smoking; and being terrified and struck with fear, they stood afar off,

1 Samuel 12:17,18 Is it not wheat harvest to day? I will call upon the Lord, and he shall send thunder and rain: and you shall know, and see that you yourselves have done a great evil in the sight of the Lord, in desiring a king over you. . . .

Job 37:1-5 At this my heart trembleth, and is moved out of its place. . . .

Job 38:25 Who gave a course to violent showers, or a way for noisy thunder:

Psalm 18:11-14 And he made darkness his cover, his pavilion round about him: dark waters in the clouds of the air. . . .

Psalm 29:3-11 The voice of the Lord is upon the waters; the God of majesty hath thundered, The Lord is upon many waters. . . .

Psalm 50:3 God shall come manifestly: our God shall come, and shall not keep silence. A fire shall burn before him: and a mighty tempest shall be round about him.

Psalm 77:18 The voice of thy thunder in a wheel. Thy lightnings enlightened the world: the earth shook and trembled.

Psalm 97:4 His lightnings have shone forth to the world: the earth saw and trembled.

Hebrews 12:18,19 For you are not come to a mountain that might be touched and a burning fire and a whirlwind and darkness and storm, . . .

Revelation 4:5 And from the throne proceeded lightnings and voices and thunders. And there were seven lamps burning before the throne, which are the seven Spirits of God.

Revelation 8:5 And the angel took the censer and filled it with the fire of the altar and cast it on the earth: and there were thunders and voices and lightnings and a great earthquake.

Revelation 11:19 And the temple of God was opened in heaven: and the ark of his testament was seen in his temple. And there were lightnings and voices and an earthquake and great hail.

thick

Exodus 19:9 The Lord said to him: Lo, now will I come to thee in the darkness of a cloud, that the people may hear me speaking to thee, and may believe thee for ever. And Moses told the words of the people to the Lord.

Exodus 40:34 The cloud covered the tabernacle of the testimony, and the glory of the Lord filled it.

2 Chronicles 5:14 Nor could the priests stand and minister by reason of the cloud. For the glory of the Lord had filled the house of God.

voice

Revelation 1:10 I was in the spirit on the Lord's day and heard behind me a great voice, as of a trumpet,

Revelation 4:1 After these things I looked, and behold a door was opened in heaven, and the first voice which I heard, as it were, of a trumpet speaking with me, said: Come up hither, and I will shew thee the things which must be done hereafter.

all the people

Jeremiah 5:22 Will not you then fear me, saith the Lord: and will you not repent at my presence? I have set the sand a bound for the sea, an everlasting ordinance, which it shall not pass over: and the waves thereof shall toss themselves, and shall not prevail: they shall swell, and shall not pass over it.

Hebrews 12:21 And so terrible was that which was seen, Moses said: I am frighted, and tremble.