Death is like falling asleep. When we awake we don't know how all that time could have passed while we slept.
This is the way the Bible describes death: Falling asleep in Jesus. "They who sleep in Jesus."
Those family and friends who survive are the ones who need help, and if they can believe in that which God says in the Bible concerning death (falling asleep), they obtain from God the true help in the time of sorrow.
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Jesus' friend Lazarus dies and Jesus goes to raise Lazarus from the dead:
(Notice how Jesus says Lazarus is sleeping.)
John 11 (Jesus says to HIS disciples.)
12 Then said HIS disciples, Lord, if he sleep, he shall do well.
13 Howbeit Jesus spake of his death: but they thought that HE had spoken of taking of rest in sleep.
14 Then said Jesus unto them plainly, Lazarus is dead.
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When a person dies, he falls asleep. There is no more pain for him. There is no more sorrow for him. There is no more trouble for him. For he is as one who sleeps!
And when he sleeps in Jesus, he will awaken to everlasting life through Jesus.
So the apostle Paul tells us not to sorrow as the pagans sorrow for we have the hope of the resurrection through Jesus.
Paul says:
I Thessalonians 4
14 For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with HIM.
15 For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent (go before) them which are asleep.
16 For the Lord HIMSELF shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
17 Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.
18 Wherefore comfort one another with these words.
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In the resurrection, Jesus takes us to the new heaven and new earth wherein dwelleth righteousness:
Revelation 21 (The apostle John tells us about the new heaven)
2 And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband.
3 And I heard a great voice out of heaven saying, Behold, the tabernacle of God is with men, and HE will dwell with them, and they shall be HIS people, and God Himself shall be with them, and be their God.
4 And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away.
5 And HE that sat upon the throne said, Behold, I make all things new.
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At the end of this world, the apostle Peter tells us what happens and also tells us how we should live on this earth until that time.
2 Peter 3
11 Seeing then that all these things shall be dissolved, what manner of persons ought ye to be in all holy conversation and godliness,
12 Looking for and hasting unto the coming of the day of God, wherein the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?
13 Nevertheless we, according to HIS promise, look for new heavens and a new earth, wherein dwelleth righteousness.
14 Wherefore, beloved, seeing that ye look for such things, be diligent that ye may be found of HIM in peace, without spot, and blameless.