It doesn't. Not that I can read. I also never made that claim. I claimed that the those who go to Hell can eventually be forgiven of their sins after suffering - unless they committed the unpardonable sin.
However - this is such a bad question - because the scriptures mention several places where we can go after this life but so many ignorant people believe that there is just "Heaven" and "Hell" - that is simply not the case.
The scriptures mention - Paradise, Hell, Prison, Kingdom of God, City of God, Kingdom of Heaven, the third Heaven, lake of fire and brimstone, outer darkness - and these are just those I can remember off the top of my head - there are probably more.
From what I understand - some of these destinations are where our souls go during the time between our death and our Resurrection - while others are places we can go after our Resurrection and our Final Judgment.
Where we go after our death depends on how we lived our lives. If we accepted Christ and repented of our sins. If we died without repentance due to ignorance or willful rebellion. Hell is one of these places. I believe there are two others mentioned - Paradise and Prison.
These are the three places I believe our souls can go while we await our time of Resurrection.
Where we go after the Final Judgment depends not only on how we lived our lives but also on which Resurrection we inherit.
Revelation 20 explains that Satan will be bound in "the bottomless pit" (I believe this to be synonymous with "outer darkness") during the Millennial reign of Christ after His Second Coming. Then those who died for Christ's sake would receive the first Resurrection and rule with Him upon the Earth - while the rest of the dead would remain wherever it is they are as spirits.
Revelation 20 goes on to explain that after the thousand years of Christ and those who rose in the first Resurrection ruling on Earth - Satan will be unbound and there will be a great war - after which Satan, the beast and the false prophet would be cast into the "lake of fire and brimstone" (which I believe is also synonymous with "outer darkness").
Then all the dead will rise (Resurrection) to be judged of God - the Final Judgment - of which both death and hell will yield up the dead that they hold to be judged according to their works.
Then the revelation states, "And
death and
hell were cast into the lake of fire. This is the
second death." (Revelation 20:14)
Both death and hell - these two conditions - are temporary and will have their end after all of us are Judged and they will be cast into the "lake of fire" (which I believe is synonymous with "outer darkness") and they will go with those whose names are not written in the book of life - who are those who committed the unpardonable sin - into the lake of fire.
According to the Lord - all other sins will be forgiven. (Matthew 12:31)
That's not what it says in my version of the Bible (King James).
The King James claims that those who worship the Beast would suffer the wrath of God - which is a torment described as "fire and brimstone" - but only the "smoke of their torment" would ascend up "forever and ever" - not that the torment itself would last forever.
It also claims that they would not enter into rest - which would make sense if they went to Hell after their deaths - but as I already explained - death and Hell are temporary conditions and that all sins would eventually be forgiven - save the unpardonable sin against the Holy Ghost.
As far as I know idol worship is not the unpardonable sin - so those who worship the Beast can eventually be forgiven after they suffer in Hell for a time.
I'm not saying that they are going to "Heaven" (whatever that is) - just that they are not going to "the lake of fire", "the bottomless pit" or "outer darkness" - but somewhere else in the Kingdom of God after they suffer and are eventually forgiven.