I'm new here, but i just have a few questions about hell.
There probably wont be a complete agreement on this one, but what exactly is it, is it a purely spiritual place of torment, physical torment, or both?
Is it really eternal, or is it closer to the catholic's purgatory?
What is preventing another fallen angel such as Lucifer in the new world? (more about that later)

My questions about hell are about the second question. Hell seems to be a place to punish people for their sins when they are not Christians, but why would it be eternal? The purpose of punishment in the Bible is for the betterment of the person, but if its eternal, the person cannot get better.

And about the fallen angel in the new world, i have always heard that after Jesus comes back, all the Christians will go to heaven forever and everything will remain good, but what if someone becomes prideful, like Lucifer, in the new world?