Some falsely preach and teach that “hell” is not a real eternal place of torment, but a metaphor, only symbolic if you will. Others claim there is no hell whatsoever. And even others claim that you disappear into “nothingness” after death (see the Annihilation false teaching above).
The Bible is abundantly clear that Hell is both a place and state of torment, and that it is eternal. The Bible says 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 through disobedience 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, and those who died in sin not covered by the blood of Christ, will also be cast into hell with Satan and his angels. 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.