Assalaam Alaikum Wa Rahmatullahi Wa Barakatuh,
Scholar Bediuzzaman Said Nursi RA explains this in Risale-i Nur:
"Belief bears the seed of a sort of Paradise, while unbelief conceals the seed of a sort of Hell. And just as unbelief is a seed of Hell, so Hell is one of its fruits. And just as unbelief is the reason for being sent to Hell, so it is the cause of Hell’s existence and creation. For if an insignificant ruler of small dignity, small pride, and small majesty is told impudently by some unmannerly person: “You may not punish me and you cannot,” if there is no prison in that place, the ruler will certainly have one built for him and will throw him into it. However, by denying Hell, the unbeliever is giving the lie to One of infinite dignity, pride, and glory, Who is sublimely and infinitely powerful, and is accusing Him of impotence, lying, and powerlessness; he is insulting His dignity and offending His pride terribly. He is rebelliously causing affront to His glory. If, to suppose the impossible, there was no reason for Hell’s existence, it would certainly be created for unbelief, which comprises denial and ascribing impotence to this degree, and such an unbeliever would certainly be cast into it.
Reckoning a year to be three hundred and sixty-five days, the law of justice requires for a one-minute murder seven million eight hundred and eighty-four thousand minutes imprisonment. So, since one minute’s unbelief is like a thousand murders, according to the law of human justice, someone who lives a life of twenty years in unbelief and dies in that state deserves imprisonment for fifty-seven billion, two hundred and one thousand two hundred million years. It may be understood from this how conformable with Divine justice is the verse,
"They will dwell therein for ever."
The reason for the connection between these two numbers, so far from one another, is this: since murder and unbelief are destruction and aggression, they have an effect on others. A murder which takes one minute negates on average at least fifteen years of the victim’s life, so the murderer is imprisoned in their place. While since one minute of unbelief denies a thousand and one Divine Names and denigrates their inscriptions, violates the rights of the universe and denies its perfections, and gives the lie to innumerable evidences of Divine Unity and rejects their testimony, the unbeliever is cast down to the lowest of the low for more than a thousand years, and “dwells” in imprisonment.
