The Coming Mass Extinction

Unbelievers maintained that the earth was always the same.
Know this first of all, that in the last days mockers will come with their mocking, following after their own lusts, and saying, "Where is the promise of His coming? For ever since the fathers fell asleep, all continues just as it was from the beginning of creation." (2 Peter 3:3-4 NASB)

Because of that, they failed to notice that the earth was once destroyed by water.
For they deliberately overlook this fact, that the heavens existed long ago, and the earth was formed out of water and through water by the word of God, and that by means of these the world that then existed was deluged with water and perished. (2 Peter 3:5-6 ESV)

The earth is now preserved for the coming destruction by fire.
But by the same word the heavens and earth that now exist are stored up for fire, being kept until the day of judgment and destruction of the ungodly. (2 Peter 3:7 ESV)

One fourth of the earth's population killed.
When He opened the fourth seal, I heard the voice of the fourth living creature say, "Come!" And I looked, and there was a pale green horse. The horseman on it was named Death, and Hades was following after him. Authority was given to them over a fourth of the earth, to kill by the sword, by famine, by plague, and by the wild animals of the earth. (Revelation 6:7-8 HCSB)

One third of the earth burnt.
The first angel blew his trumpet, and hail and fire, mixed with blood, were hurled to the earth. So a third of the earth was burned up, a third of the trees were burned up, and all the green grass was burned up. (Revelation 8:7 HCSB)

One third of the living creatures in the sea died.
The second angel blew his trumpet, and something like a great mountain ablaze with fire was hurled into the sea. So a third of the sea became blood, a third of the living creatures in the sea died, and a third of the ships were destroyed. (Revelation 8:8-9 HCSB)

One third of the fresh water became bitter.
The third angel blew his trumpet, and a great star, blazing like a torch, fell from heaven. It fell on a third of the rivers and springs of water. The name of the star is Wormwood, and a third of the waters became wormwood. So, many of the people died from the waters, because they had been made bitter. (Revelation 8:10-11 HCSB)

One third of the remaining population killed.
So the four angels who were prepared for the hour, day, month, and year were released to kill a third of the human race. (Revelation 9:14 HCSB)

All the sea creatures died.
The second angel poured out his bowl into the sea, and it became blood like that of a dead man; and every living thing in the sea died. (Revelation 16:3 NASB)

All the unbelievers died.
From his mouth comes a sharp sword with which to strike down the nations, and he will rule them with a rod of iron. He will tread the winepress of the fury of the wrath of God the Almighty. (Revelation 19:15 ESV)
I trampled the winepress alone, and no one from the nations was with Me. I trampled them in My anger and ground them underfoot in My fury; their blood spattered My garments, and all My clothes were stained. (Isaiah 63:3 HCSB)
And the winepress was trodden outside the city, and blood flowed from the winepress, as high as a horse’s bridle, for 1,600 stadia. (Revelation 14:20 ESV)