"So it will be at the end of the age. The angels will come out and separate the evil from the righteous and throw them into the furnace of fire, where there will be weeping and gnashing of teeth."
~ Jesus of Nazareth, quoted in Matthew 13:49-50
~ Revelations 21:5-8
Combined with the story of the steward who owed more than he could ever pay (Matthew 18:32-35) and Christ's words in Luke 12:10 "Everyone who speaks a word against the Son of Man will be forgiven, but the one who blasphemes against the holy Spirit will not be forgiven." I'd have a very hard time reconciling anything other than "Hell is real and you can go there forever" as having a biblical basis.
https://www.biblegateway.com/passage/?search=Revelation%2021...
The passage from revelation again says nothing of eternity, the word death is rather absolute - the case would be much stronger if it finished “… which is where they suffer without end”. As for the parable, the passage states that his imprisonment was “until he could repay his debts”. This suggests he may be able to repay them eventually, at which point he’ll be free. It could be interpreted that after an appropriate amount of time spent experiencing the punishment of fire, perhaps until the balance is settled for whatever your transgressions were, you will no longer being in the fire. Blasphemy against the Spirit is an interesting case, I could see potentially that one class of transgressors being sentenced to eternal punishment. Alternatively, it could be saying that one who blasphemed against the Spirit has had their heart hardened so much that they will never seek forgiveness, and therefor will never get it. Their end isn’t specified here. In all this I’m not saying that the “eternal conscious torment” perspective is wrong, just that there are other interpretations which are just as based. If you have the time, I highly recommend the “Three Views of Hell” lecture series^, which goes into far more detail than I could manage here, including going through every verse in the Bible which speaks of anything related to what we now consider “Hell”.
^search “the narrow path” for the three views of hell lecture.
I think folks should have stopped with Zoroastrianism, all the monotheistic rest is just layer of sects upon sects upon sects, all coming from roughly same geographical area and all preaching basically the same copy paste with some tiny differences then blown out of proportions by fanatic zealots, completely misunderstanding or ignoring the same basic message within.
Look at discussion here - many folks have their own version of reality re this topic, normally set up how they like it, sometimes not that much compatible with each other. A question - do you feel like this reality, universe and all we anyhow experience, is somehow conforming to our wishful expectations and arranges itself to match that so the expectations get confirmed? I call this semi-rational discussion - smart folks politely discussing utter irrational bollocks. I get where the need for spiritual comes from - we are still roughly the same as those early tribes that believed in long lost religions. I just didn't get that hole filled via traditional indoctrination by others, a wonderful gift to a child and maybe the best - a self-determination with respect for his choices. Cousin had the same upbringing, ended up as protestant priest and now has a nice family with 3 kids. Self-determination.
But religion is literal opium for the masses. And opium is highly addictive, especially when served since very early childhood continuously. I see it my wife, she tried to shed it, and failed, its burned too deep into personality. She settled somewhere in the middle compared to rather fanatical upbringing.
It is totally possible to conceive of a monotheism that isn't based on this kind of eternal conflict.