The concept of an eternal hell, like we see in current day christianity, did not exist in judaism, and there isn't much of it in early texts that formed the bible. In fact, contrary to what many people think, the notion of a "purgatory" like gehenna (IE a place where everyone's souls, even the non wickedm, go to so that they may pay for their sins, purify themselves and eventualy be released from) is older in judaism than hell as we know it. Well, at least thats how the Kaballah describes it. The interpretation of Gehenna as an actual place may not even be accurate, as it may have originally been used to describe the shame one feels after realizing how far from God they've placed themselves, through their sins.
I thiiiiink that in the book of enoch, hell (tartarus) is place in which the watchers (fallen angels who betrayed God and mingled with humans) are trapped, and there's no mention of human souls going there.
Christian hell comes mostly from the new testament, and even then it isn't eternal before the apocalypse. In fact, if you were wicked in life, you just stay there until the resurrection of everyone ever during the apocalypse, in which the dead will be judged alongside the living, according to the bible, and the wicked may redeem themselves then, since they would already be aware of their sins by passing through hell.
The idea of an eternal hell is also denied by gnostic christians and spiritualists/spiritists, in which there's no actual hell, since we are already in the worst part of existence (material existence and mostly ignorant of God and our true nature).