The Coming Of Thunder
Natural thunder is a sound phenomenon that is caused by the electrical discharge known as "lightning." The flash rapidly heats and expands the nearby air by over a thousand times, forming a powerful compression wave that is heard as thunder.
There is also supernatural thunder that exists not merely from a physical atmosphere, but as an expression of God's power where the spiritual and physical world meet. The Throne of God, which is now in heaven (see the Fact Finder question below to understand when it's coming to earth) is surrounded by "lightnings and thunderings."
"4:2 And immediately I was in the spirit; and, behold, a throne was set in heaven, and one sat on the throne. 4:3 And he that sat was to look upon like a jasper and a sardine stone: and there was a rainbow round about the throne, in sight like unto an emerald. 4:4 And round about the throne were four and twenty seats: and upon the seats I saw four and twenty elders sitting, clothed in white raiment; and they had on their heads crowns of gold. 4:5 And out of the throne proceeded lightnings and thunderings and voices: and there were seven lamps of fire burning before the throne, which are the seven Spirits of God. 4:6 And before the throne there was a sea of glass like unto crystal: and in the midst of the throne, and round about the throne, were four beasts full of eyes before and behind." (Revelation 4:2-6 KJV)
"The voice of mighty thunderings"
Prior to the return of Jesus Christ, The Seven Seals will be opened upon the earth. Among them will be the famous "four horsemen of the apocalypse" which represent false Christianity, war, famine and plague (see What Does 'Apocalypse' Really Mean? and Chariots And Horsemen Of The Apocalypse) who will be released amidst "the noise of thunder."
"6:1 And I saw when the Lamb opened one of the seals, and I heard, as it were the noise of thunder, one of the four beasts saying, Come and see. 6:2 And I saw, and behold a white horse: and he that sat on him had a bow; and a crown was given unto him: and he went forth conquering, and to conquer.
The opening of the scroll described above will be in heaven, by Jesus Christ prior to His return to earth, but notice how the thunder of heaven begins then to reach earth i.e. "into the earth: and there were voices, and thunderings, and lightnings, and an earthquake."
"8:5 And the angel took the censer, and filled it with fire of the altar, and cast it into the earth: and there were voices, and thunderings, and lightnings, and an earthquake.
Angels will deliver the LORD's wrath upon the earth prior to the Messiah's coming i.e. a "mighty angel come down from heaven" with great thunder from heaven (see Heavens Below, Heavens Above).
"10:1 And I saw another mighty angel come down from heaven, clothed with a cloud [see also Behold, He Cometh With Clouds]: and a rainbow was upon his head, and his face was as it were the sun, and his feet as pillars of fire: 10:2 And he had in his hand a little book open: and he set his right foot upon the sea, and his left foot on the earth, 10:3 And cried with a loud voice, as when a lion roareth: and when he had cried, seven thunders uttered their voices. 10:4 And when the seven thunders had uttered their voices, I was about to write: and I heard a voice from heaven saying unto me, Seal up those things which the seven thunders uttered, and write them not." (Revelation 10:1-4 KJV)
The "two witnesses" will be martyred in Jerusalem just as the brief "abomination of desolation" happens (see Abomination of Desolation - Where? and How Long Will 'The End Time' Last? to understand that the "abomination of desolation" will happen for an "hour" at the end of the 42 month "great tribulation"). After laying dead in the street for over 3 days, they will be resurrected and ascend to heaven just before Christ's return and the first resurrection (see When Will You Be Judged?). The Ark of the Covenant, which is in Jerusalem now (see Raiders Of The Lost Ark) and will almost certainly be in the "Holy Place" in which the "abomination of desolation" occurs, will also ascend to heaven, with, or soon after, the two witnesses (see How Does The Ark Get To Heaven?). All of that will occur with heavenly thunder.
"11:3 And I will give power unto my two witnesses, and they shall prophesy a thousand two hundred and threescore days, clothed in sackcloth. 11:4 These are the two olive trees, and the two candlesticks standing before the God of the earth. 11:5 And if any man will hurt them, fire proceedeth out of their mouth, and devoureth their enemies: and if any man will hurt them, he must in this manner be killed. 11:6 These have power to shut heaven, that it rain not in the days of their prophecy: and have power over waters to turn them to blood, and to smite the earth with all plagues, as often as they will.
The return of Jesus Christ will then happen with "the voice of a great thunder", thereby fulfilling the true meaning of "Zionism" (see Zionism). The "hundred forty and four thousand" will be a part of the first harvest of salvation.
"14:1 And I looked, and, lo, a Lamb stood on the mount Sion, and with him an hundred forty and four thousand, having his Father's name written in their foreheads. 14:2 And I heard a voice from heaven, as the voice of many waters, and as the voice of a great thunder: and I heard the voice of harpers harping with their harps: 14:3 And they sung as it were a new song before the throne, and before the four beasts, and the elders: and no man could learn that song but the hundred and forty and four thousand, which were redeemed from the earth." (Revelation 14:1-3 KJV)
The world that Satan built, the part that remains that hasn't destroyed itself by man's arrogance and folly, will then be wiped away amidst "thunders, and lightnings."
"16:17 And the seventh angel poured out his vial into the air; and there came a great voice out of the temple of heaven, from the throne, saying, It is done. 16:18 And there were voices, and thunders, and lightnings; and there was a great earthquake, such as was not since men were upon the earth, so mighty an earthquake, and so great. 16:19 And the great city was divided into three parts, and the cities of the nations fell: and great Babylon came in remembrance before God, to give unto her the cup of the wine of the fierceness of his wrath. 16:20 And every island fled away, and the mountains were not found. 16:21 And there fell upon men a great hail out of heaven, every stone about the weight of a talent: and men blasphemed God because of the plague of the hail; for the plague thereof was exceeding great." (Revelation 16:17-21 KJV)
The great religious and political mis-leaders of the world will also then receive their due.
"19:1 And after these things I heard a great voice of much people in heaven, saying, Alleluia; Salvation, and glory, and honour, and power, unto the Lord our God: 19:2 For true and righteous are his judgments: for he hath judged the great whore, which did corrupt the earth with her fornication, and hath avenged the blood of his servants at her hand. 19:3 And again they said, Alleluia. And her smoke rose up for ever and ever.
Fact Finder: When is The Throne of God coming to earth?