"And the one who was seated on the throne said, “See, I am making all things new.” Also he said, “Write this, for these words are trustworthy and true.” Then he said to me, “It is done! I am the Alpha and the Omega, the beginning and the end. To the thirsty I will give water as a gift from the spring of the water of life. Those who conquer will inherit these things, and I will be their God and they will be my children. But as for the cowardly, the faithless, the polluted, the murderers, the fornicators, the sorcerers, the idolaters, and all liars, their place will be in the lake that burns with fire and sulfur, which is the second death.”"

~ 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...