24 “And they shall go forth and look on the dead bodies of the men that have rebelled against me; for their worm shall not die, their fire shall not be quenched, and they shall be an abhorrence to all flesh.”

This reflects Rev 21:
14 Blessed are those who wash their robes, that they may have the right to the tree of life and that they may enter the city by the gates. 15 Outside are the dogs and sorcerers and fornicators and murderers and idolaters, and every one who loves and practices falsehood.

and Daniel 12:
2 And many of those who sleep in the dust of the earth shall awake, some to everlasting life, and some to shame and everlasting contempt.

Hell is a scary doctrine - but I think the biblical evidence for the Christian tradition's understanding of it as a place of permanent pain is strong enough to make it true.