Christ spoke about Hell eleven times in the scriptures. He did not say, “And the unrighteous will enter the house of God and be happy forever,” or “the impenitent will be destroyed and exist no longer.”
Rather, He said explicitly that there is a place called Hell (Gehenna); that people go there, and that it’s forever. In speaking about the suffering in Hell, he described it as: “everlasting punishment” (Matthew 25:46); “everlasting fire” (Matthew 25:41); “the fire that will never be quenched” (Mark 9:43-46); “the worm that never dies” (Mark 9:44). Of course, many of the things Jesus said during his earthly ministry can be construed in different ways. But not all of them. Certain statements he made simply preclude misinterpretation. Those having to do with Hell are in that category.
C.S. Lewis famously said: “In the long run the answer to all those who object to the doctrine of Hell is itself a 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, on Calvary. To forgive them? They will not be forgiven. To leave them alone? Alas, I am afraid that is what he does.”