DuracellEnergizer said:

If Hell is real and sinners do end up in it, they suffer only as long as they sinned, and their suffering is only as great as their sins. Since no one has committed infinite sins, no ones burns in Hell eternally.

Every sinner who has ever lived atones eventually -- every sinner.

That sounds more or less like the Catholic concept of Purgatory, though those who reject God even once they've seen him do get stuck in Hell forever.

Some think that no one would reject God in this case, and that even if they did, they would change their mind eventually. I disagree, though I can't offer any evidence either way.