Some falsely teach that hell is not a real eternal place of torment, that it is only a metaphor, a symbol, if you will. Others claim there is no hell whatsoever. And still others claim that you disappear into “nothingness” after death (see the Annihilation After Death false teaching above). However, the Bible is clear that Hell is both 1) a place, and 2) a state of torment – and that its duration is eternal.
The Bible tells us that hell was originally created for “the devil and his angels who sinned” at one time in disobedience and rebellion to God. The Bible doesn’t say when that occurred, but it nonetheless occurred. Mankind wasn’t supposed to go to hell, but also through disobedience by man of God, sin entered the world, and death through sin. When God restores His creation to a perfect state at the end of time, all things sinful, including those who chose to die in sin not covered by the blood of Christ, will be cast into hell with Satan and his angels for eternity. God will make a full end of sin, banishing it forever from His heavenly kingdom.
The topic of hell is extensively discussed in the Beyond the Tomb book, which I highly recommend reading right after this one.