I think it deserves honorable mention that Jesus give solem warnings for specfic reasons. In Mark 9:43, he states that it is better to enter life crippled, than to be whole and enter into hell, the unquenchable fire. Where their worm does not die, nor does the fire die. Perhaps the only scripture where Jesus actually compares hell to the lake of fire, and makes it a point, 3 times, to be aware in our thinking that we are better off being physically handicapped by being righteous, and to carry that condition into heaven, ( and be healed) than to not make the sacrifices that we should in our human living, as we march toward our destiny with the grave, or hell.
Everryone will be salted with fire, or every human has a devine destiny. Hell, the lake of fire, the worm not quenched, all are destiny, or unavoidable circumstance, which must be viewed from a standpoint of Salvation, which is not circumstancial. The worm dies from circumstance, if it is a situation where the worm does not die, then there is no circumstance. There is only eternity. So when the worm does not die, its just out of the relm of human circumstance, now your in the fire, which I think only means eternity in this scripture. So in this matter, I think the worm, means the " Soul of the human." The soul that sins shall die, so this worm is dead already physically, but now must face eternity.
So again the lumming belief that the lake of fire is medicnal, needs to be rightly considered, because it carrys a lot of weight. It just may well be true. I don't know. Souls of the dead being ressurected again to life, then never dying again. Fire is good when it is hot, but when it looses its heat, what good is it? Our lack of understanding is a heat, and we are not going to loose it as of yet. What good is salt that has lost its flavor? What good is a worm, or a soul that can die? The soul that sins shall die, so in one sense, we NEED to have a worm that never dies.
We just need God to bathe us with righteous eternal existance.