Do not fear those who kill the body but cannot kill the soul; rather fear him who can destroy both soul and body in hell. Matthew 10: 28.
The doctrine of hell, says C.S. Lewis, although barbarous to many, has the full support of Scripture, especially of our Lord's own words; and has always been held by Christendom. And it has the support of reason: if a game is played it must be possible to lose it. If the happiness of a creature lies in voluntary self-surrender to God, it also has the right to voluntarily refuse.

'I would pay any price to be able to say truthfully 'All will be saved'. But my reason retorts, 'Without their will, or with it'? In fact, God has paid the price, and herein lies the real problem: so much mercy, yet still there is hell.'

HORRIBLE FREEDOM.
These will go away to eternal punishment, but the righteous into eternal life. Matthew 25:46.

Our Lord uses three symbols to describe hell - everlasting punishment (Matthew 25:46), destruction (Matthew 10:28), and privation, exclusion, banishment (Matthew 22:13). The image of fire illustrates both torment and destruction (not annihilation - the destruction of one thing issues in the emergence of something else, in both worlds). It may be feasible that hell is hell not from its own point of view, but from that of heaven. And it is also possible that the eternal fixity of the lost soul need not imply endless duration. Our Lord emphasises rather the finality of hell.
Does the ultimate loss of a soul mean the defeat of Omnipotence? In a sense, yes. The damned are successful rebels to the end, enslaved within the horrible freedom they have demanded. The doors of hell are locked on the inside.
Lord, I choose you - and eternal life. Amen......

HELL AND HEAVEN.
'Hallelujah! Salvation and glory and power to our God, for his judgments are true and just.' Revelation 19:1,2.

C.S.Lewis continues by contrasting hell and heaven:

In the long run, objectors to the doctrine of hell must answer this question: What are you asking God to do? To wipe out their past sins, and at all costs to give them a fresh start, smoothing every difficulty, and offering every miraculous help? But he has done so - in the life and death of his Son. To forgive them? They will not be forgiven. To leave them alone? Alas, that is what he does. Hell, it must be remembered, is not only inhabited by Neros or Judas Iscariots or Hitlers. They were merely the principal actors in this rebellious drama.

God's heaven is not a bribe: it offers nothing a mercenary soul can desire. The great summons to heaven is that away from self. This is the ultimate law - the seed dies to live, the bread must be cast upon the waters, those who lose their soul will save it. Perhaps self-conquest will never end; eternal life may mean an eternal dying.