What evidence have you that such a hell exists?

The Catholic Answers

The very best The God who made us tells us that He also has made a hell. There is a hell in which both the bodies and the souls of the lost will be afflicted. Thus the gentle Christ Himself warns us, “It is expedient for thee that one of thy members should perish rather than that thy whole body go into hell.” Mk. IX., 29. Remember that all shall rise some day, the good and bad alike, the body sharing in the fate of the soul. “All that are in the graves shall hear the voice of the Son of God. And they that have done good things shall come forth unto the resurrection of life; but they that have done evil unto the resurrection of judgment.” Jn. V., 28. Those who are lost will go to everlasting fire. Christ calls it “unquenchable fire.” Mk. IX., 44. He tells us of the grim sentence, “Depart from me you cursed into everlasting fire which was prepared for the devil and his angels.” Matt XXV., 41. Such a solemn utterance of the judicial sentence demands the literal sense. Judges do not speak in metaphors at such moments, “Let him be hanged—but of course only metaphorically!” And it will be conscious suffering. Our Lord says, “Their worm dieth not, and the fire is not extinguished.” Mk. IX., 43. And again, “There shall be woeping and gnashing of teeth.” Matt XIII., 49. Continued conscious suffering is the fate of the lost. And reason demands such a fate. When a man sins gravely, he chooses between God and a thing forbidden by God. He cannot have both, and he prefers to renounce God rather than the created good. If he dies without repentance his will is still alienated from God. He would do the same thing again if he got the chance. And as long as these dispositions last, he must do without God, and happiness. These dispositions lasting forever once this probationary life is over, so will the penalty.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty