those who choose it will have it ...

    'And yet all loneliness, angers, hatreds, envies and itchings that [Hell] contains, if rolled into one single experience and put into the scale against the least moment of the joy that is felt by the least in Heaven, would have no weight that could be registered at all. Bad cannot succeed even in being bad as truly as good is good. If all Hell's miseries together entered the consciousness of yon wee yellow bird on the bough there, they would be swallowed up without a trace, as if one drop of ink had been dropped into that Great Ocean to which your terrestrial Pacific itself is only a molecule.'

    '.... For a damned soul is nearly nothing: it is shrunk, shut up in itself. Good beats upon the damned incessantly as sound waves beat on the ears of the deaf, but they cannot receive it. Their fists are clenched, their eyes fast shut. First they will not, in the end they cannot, open their hands for gifts, or their mouths for food, or their eyes to see.'
    'Then no one can ever reach them?'
    'Only the Greatest of all can make Himself small enough to enter Hell. For the higher a thing is, the lower it can descend—a man can sympathise with a horse but a horse cannot sympathise with a rat. Only One has descended into Hell.'
    'And will he ever do so again?'
    'It was once not long ago that He did it. Time does not work that way when once ye have left the Earth. All moments that have been or shall be were, or are, present in the moment of His descending. There is no spirit in prison to Whom He did not preach.'
    'And some hear him?'
    'Aye.'
    '.... If ye put the question from within Time and are asking about possibilities, the answer is certain. The choice of ways is before you. Neither is closed. Any man may choose eternal death. Those who choose it will have it. But if ye are trying to leap on into eternity, if ye are trying to see the final state of all things as it will be (for so ye must speak) when there are no more possibilities left but only the Real, then ye ask what cannot be answered to mortal ears. Time is the very lens through which ye see—small and clear, as men see through the wrong end of a telescope—something that would otherwise be too big for ye to see at all. That thing is Freedom: the gift whereby ye most resemble your Maker and are yourselves parts of eternal reality. But ye can see it only through the lens of Time, in a little clear picture, through the inverted telescope. It is a picture of moments following one another and yourself in each moment making some choice that might have been otherwise. Neither the temporal succession nor the phantom of what ye might have chosen and didn't is itself Freedom. They are the lens. The picture is a symbol: but it's truer than any philosophical theorem (or, perhaps, than any mystic's vision) that claims to go behind it. For every attempt to see the shape of eternity except through the lens of Time destroys your knowledge of Freedom. Witness the doctrine of Predestination which shows (truly enough) that eternal reality is not waiting for a future in which to be real: but at the price of removing Freedom which is the deeper truth of the two. .... Ye cannot know eternal reality by a definition. Time itself, and all acts and events that fill Time, are the definition, and it must be lived. The Lord said we were gods. How long could ye bear to look (without Time's lens) on the greatness of your own soul and the eternal reality of her choice?'

an excerpt from  The Great Divorce  by C.S. Lewis