The eternal torment referred to by the Bible doesn't take place in hell, which is temporarily in the center of the Earth, there's another location: a lake of fire and brimstone in outer darkness.
Eternal Torment
Gnashing of Teeth
We're making the case that hell is at the center of the Earth, it's temporary, and eventually it will be disposed of in the furthest reaches of space referred to in the Bible as outer darkness.
Outer Darkness
Outer darkness is only referred to three times in scripture, but by using context we can establish what and where it is. The easiest thing to take for context is the gnashing of teeth, which occurs nine times in the Bible.
November 30th
If all of the impurity and corruption has been disposed of in the lake of fire in outer darkness then the center of creation is free for God to inhabit with his people: those who chose him because they had free will.