I think Jesus and John used language to describe Hell as a place we certainly do not want to go and in ways for us to try and understand. I think the "fire" of hell is quite different than the fire we know about living on earth. For example, we know earthly fire gives off light, but Hell is also described as "outer darkness" in Revelation. That doesn't make any sense to me. But trust me, looking at all the scriptures concerning Hell, we do not want to end up there. Hell was not made for us anyway, it was made for Satan and his angels.