But the Quran has no such problem. If you believe in the Quran, you believe in hell. You know what it's like and who is going there.
I counted 98 passages in the Quran that mention hell. Here's a summary.
Who is going to hell?
- Those who deny the existence of hell
This is hell which the guilty deny. They go circling round between it and fierce, boiling water. 55:43-44
- All non-muslims
They who disbelieve and deny Our revelations, such are rightful owners of hell. 5:10
But those who disbelieve and deny Our revelations, they are owners of hell-fire. 5:86
Those who disbelieve will be gathered unto hell. 8:36
Lo! hell verily is all around the disbelievers. 9:49
We have appointed hell a dungeon for the disbelievers. 17:8
Lo! We have prepared hell as a welcome for the disbelievers. 18:102
That is their reward: hell, because they disbelieved, and made a jest of Our revelations and Our messengers. 18:106
Hell verily will encompass the disbelievers 29:54
But as for those who disbelieve, for them is fire of hell; it taketh not complete effect upon them so that they can die, nor is its torment lightened for them. 35:36
This is hell which ye were promised (if ye followed him). Burn therein this day for that ye disbelieved. 36:63-64
Those who disbelieve are driven unto hell in troops. 39:71
Those who disbelieve and deny Our revelations, they are owners of hell-fire. 57:19
- Anyone who kills a Muslim
Whoso slayeth a believer of set purpose, his reward is hell for ever. 4:93
- Muslims that refuse to serve and fight for Allah
When ye meet those who disbelieve in battle, turn not your backs to them. Whoso on that day turneth his back to them, unless manoeuvring for battle or intent to join a company, he truly hath incurred wrath from Allah, and his habitation will be hell, a hapless journey's end. 8:15-16
Those who scorn My service, they will enter hell, disgraced. 40:60
- Muslims that oppose or disobey Allah, Muhammad, or the Quran
Whoso opposeth the messenger after the guidance (of Allah) hath been manifested unto him, and followeth other than the believer's way, We appoint for him that unto which he himself hath turned, and expose him unto hell - a hapless journey's end! 4:115
Know they not that whoso opposeth Allah and His messenger, his verily is fire of hell, to abide therein? 9:63
Whoso disobeyeth Allah and His messenger, lo! his is fire of hell, wherein such dwell for ever. 72:23
What's it like in hell?
But maybe I'm wrong. Maybe there are some moderate Muslims (like Cat Stevens?) that don't believe in hell. If so, I'd love to hear about it.
On the day when it will (all) be heated in the fire of hell, and their foreheads and their flanks and their backs will be branded therewith. 9:35
Hell is before him, and he is made to drink a festering water, Which he sippeth but can hardly swallow, and death cometh unto him from every side while yet he cannot die, and before him is a harsh doom. 14:16-17
Hell, where they will burn, an evil resting-place. Here is a boiling and an ice-cold draught, so let them taste it. 38:56-57
Lo! the guilty are immortal in hell's torment. It is not relaxed for them, and they despair therein. 43:74-75
Take him and drag him to the midst of hell, Then pour upon his head the torment of boiling water. 44:47-48
On the day when they are dragged into the Fire upon their faces (it is said unto them): Feel the touch of hell. 54:48
Then the welcome will be boiling water And roasting at hell-fire. 56:92-94