To be dead is like to be asleep, hence why the dead are said to be sleeping,
He said, “Leave; for the girl has not died, but is asleep.” And they began laughing at Him. (Matthew 9:24 [NIV])
After that, he appeared to more than five hundred of the brothers and sisters at the same time, most of whom are still living, though some have fallen asleep. (1 Corinthians 15:6 [NIV])
And just as the passing of time is quick from the moment of sleep to the moment of waking up, so in likewise manner it is from the moment of death to the moment of resurrection. This is why Sheol is said to be a place of no thought, no knowledge, no work,Consider and answer me, O LORD my God; light up my eyes, lest I sleep the sleep of death, (Psalm 13:3 [ESV])
Because the dead do not have thoughts, since the dead are not conscious. And as such, it is the soul of a man that goes to Sheol at death,Whatever your hand finds to do, do it with your might, for there is no work or thought or knowledge or wisdom in Sheol, to which you are going. (Ecclesiastes 9:10 [ESV])
Whereas the spirit of man returns to God who gave it,For you will not abandon my soul to Sheol, or let your holy one see corruption. (Psalm 16:10 [ESV])
As the spirit belongs to God who gave it,and the dust returns to the ground it came from, and the spirit returns to God who gave it. (Ecclesiastes 12:7 [NIV])
And this spirit of man is the breath of man, which is why the Greek and Hebrew word for spirit is the same word for breath or wind, in which case, even animals, have this same spirit that man has,And the LORD said, My spirit shall not always strive with man, for that he also is flesh: yet his days shall be an hundred and twenty years. (Genesis 6:3 [KJV])
And so, this spirit was the breath that gave life to man,And they went in unto Noah into the ark, two by two of all flesh in which is the spirit of life. (Genesis 7:15 [JB2000])
And just as the soul becomes living when the breath of life is given, so does the soul become dead when the breath of life goes back to God who gave it. And although the body decays and returns to the dust when the breath of life is taken away,And the LORD God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul. (Genesis 2:7 [KJV])
and the dust returns to the earth as it was, and the life’s breath returns to God who gave it. (Ecclesiastes 12:7 [NETBIBLE])
The soul sleeps and is kept hidden in Sheol, so that it may one day awaken to be judged at the resurrection of all the dead, hence why the dead are prophesied to come out of Sheol, which is where the souls of the dead are, at the final great white throne judgment, which is mentioned in this prophecy concerning the dead coming out of Hades, which is the Greek word for Sheol,By the sweat of your brow you will eat your food until you return to the ground, since from it you were taken; for dust you are and to dust you will return." (Genesis 3:19 [NIV])
And as such, whoever is not found written in the book of life, will be cast into the lake of fire,The sea gave up the dead that were in it, and death and Hades gave up the dead that were in them, and each person was judged according to what they had done. (Revelation 20:13 [NIV])
And this fire not only destroys the body, but also the soul,Anyone whose name was not found written in the book of life was thrown into the lake of fire. (Revelation 20:15 [NIV])
Which is why this judgment of fire is also called the second death,And do not fear those who kill the body but cannot kill the soul. Rather fear him who can destroy both soul and body in hell. (Matthew 10:28 [ESV])
Because it will be a second death to those who died before, and then die again when thrown into the lake of fire. This is why there will be dead bodies in the lake of fire,Then death and Hades were thrown into the lake of fire. The lake of fire is the second death. (Revelation 20:14 [NIV])
Because whoever is thrown into the lake of fire dies, and this same place described in this prophecy in Isaiah where the worm does not die nor the fire is quenched is the same place described by Jesus as the place where the worm does not die nor is the fire quenched,"And they will go out and look on the dead bodies of those who rebelled against me; the worms that eat them will not die, the fire that burns them will not be quenched, and they will be loathsome to all mankind." (Isaiah 66:24 [NIV])
And as such, not only will body and soul be destroyed, but whoever is thrown into the lake of fire will cease to exist,And if your eye causes you to stumble, pluck it out. It is better for you to enter the kingdom of God with one eye than to have two eyes and be thrown into hell, where "'the worms that eat them do not die, and the fire is not quenched.' (Mark 9:47-48 [NIV])
And all the wicked will be reduced to mere ashes,You defiled your sanctuaries with your many sins and your dishonest trade. So I brought fire out from within you, and it consumed you. I reduced you to ashes on the ground in the sight of all who were watching. All who knew you are appalled at your fate. You have come to a terrible end, and you will exist no more.(Ezekiel 28:18-19 [NLT])
This is why it is said that the anger of God, although severe, is but for a moment,Then you will trample on the wicked; they will be ashes under the soles of your feet on the day when I act," says the LORD Almighty. (Malachi 4:3 [NIV])
Whereas those who have died and belong to Jesus Christ will be resurrected at his second coming,For his anger lasts only a moment, but his favor lasts a lifetime; weeping may stay for the night, but rejoicing comes in the morning. (Psalm 30:5 [NIV])
"Then will appear the sign of the Son of Man in heaven. And then all the peoples of the earth will mourn when they see the Son of Man coming on the clouds of heaven, with power and great glory. (Matthew 24:30 [NIV])
And will be gathered together by angels to be taken to meet the Lord in the air, along with those who were already alive and also belong to Jesus Christ,For the Lord himself will come down from heaven, with a loud command, with the voice of the archangel and with the trumpet call of God, and the dead in Christ will rise first. (1 Thessalonians 4:16 [NIV])
And he will send his angels with a loud trumpet call, and they will gather his elect from the four winds, from one end of the heavens to the other. (Matthew 24:31 [NIV])
This is the first resurrection spoken of in this prophecy,Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord. (1 Thessalonians 4:17 [ESV])
In which case, whoever partakes in the first resurrection, will not only rule with Jesus Christ for a thousand years on this earth, but will also live onwards into the eons of the eons beginning in a new heaven and new earth, since those who are resurrected in this first resurrection will never die again, which is why it is said that the "second death has no power over them",Blessed and holy are those who share in the first resurrection.The second death has no power over them, but they will be priests of God and of Christ and will reign with him for a thousand years. (Revelation 20:6 [NIV])
in a flash, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed. For the perishable must clothe itself with the imperishable, and the mortal with immortality.
(1 Cortinthians 15:52-53 [NIV])
And whoever lives into the new heaven and new earth will also never die, since death itself will be also be no more,Then I saw "a new heaven and a new earth," for the first heaven and the first earth had passed away, and there was no longer any sea. (Revelation 21:1 [NIV])
He will wipe every tear from their eyes. There will be no more death' or mourning or crying or pain, for the old order of things has passed away." (Revelation 21:4 [NIV])