Hell can be translated as the grave the Bible says that the dead do not know anything
Ecclesiastes 9:5
(5) For the living know that they shall die: but the dead know not any thing, neither have they any more a reward; for the memory of them is forgotten.
Psalms 146:4
(4) His breath goeth forth, he returneth to his earth; in that very day his thoughts perish.
Sodom and Gomorrah are an example of what will happen to all those who will be punished with eternal death
Jude 1:7
(7) Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.
If the fire is eternal then why is not Sodom and Gomorrah still burning? Because the punishing is not eternal but the punishment is.
People will burn at the end of the thousand years but it will only last a short time
Revelation 20:7-15
(7) And when the thousand years are expired, Satan shall be loosed out of his prison,
(8) And shall go out to deceive the nations which are in the four quarters of the earth, Gog and Magog, to gather them together to battle: the number of whom is as the sand of the sea.
(9) And they went up on the breadth of the earth, and compassed the camp of the saints about, and the beloved city: and fire came down from God out of heaven, and devoured them.
(10) And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.
(11) And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them.
(12) And I saw the dead, small and great, stand before God; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works.
(13) And the sea gave up the dead which were in it; and death and hell delivered up the dead which were in them: and they were judged every man according to their works.
(14) And death and hell were cast into the lake of fire. This is the second death.
(15) And whosoever was not found written in the book of life was cast into the lake of fire.
If hell is a place of eternally burning then why is it cast into the lake of fire?
Nahum 1:9-10
(9) What do ye imagine against the LORD? he will make an utter end: affliction shall not rise up the second time.
(10) For while they be folden together as thorns, and while they are drunken as drunkards, they shall be devoured as stubble fully dry.
When stubble fully dry is devoured it is done so instantly
2 Peter 3:10-11
(10) But the day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up.
(11) Seeing then that all these things shall be dissolved, what manner of persons ought ye to be in all holy conversation and godliness,
If people get a concordance you can find the meaning for yourself