Through the teachings of Joseph Smith, we know that scriptures which speak of the fires of hell speak figuratively. Disembodied spirits don’t burn in hell, their suffering is worse than that. The flame of unquenchable fire doesn’t burn from without; it burns from within. Thus, those who have become ‘past feeling’ will feel again. Their sufferings will ’be sore—how sore you know not, how exquisite you know not, yea, how hard to bear you know not.’ Having rejected the offering of Gesthemane, they will be given their own Gesthemane (DC 19:15-19). Indeed, no pain is as great as the mental, emotional, and spiritual torture of a guilty conscience.
Joseph Smith
“A man is his own tormenter and his own condemner. Hence the saying, They shall go into the lake that burns with fire and brimstone. The torment of disappointment in the mind of man is as exquisite as a lake burning with fire and brimstone. I say, so is the torment of man.” (Teachings, p. 357)