I recommend the book
‘The Sight of Hell’ by Fr. John Furniss and Rev. F.X. Schouppe’s ‘Hell’.
There is also an involved audio
sermon here entitled appropriately enough ‘Hell’.
If I may quote from the above mentioned… to add to the excellent quotes already. . .
"This is how the occurrence is related, after authentic documents in the Annals of Franciscan Missions, for the years 1866-67. It was not without a terrible, though merciful interposition of God’s justice, that Blessed Richard was brought to demand the habit of St. Francis. It was in 1604. There were at Brussels, where Richard was at that time, two young students who, instead of applying themselves to study, thought only of how to live in pleasure and dissipation. One night, among others, when they had gone to indulge in sin in a house of ill-fame, one of the two left the place after some time, leaving his miserable companion behind him.
Having reached home, he was about to lie down in bed, when he remembered that he had not recited that day the few Hail Marys which he had the habit of saying every day in honour of the Holy Virgin. As he was overpowered by sleep, it was troublesome for him; however, he made an effort and said them, although without devotion; then he went to bed. In his first sleep he heard all of a sudden, a rude knocking at the door; and immediately afterward he saw before him his companion, disfigured and hideous.
“Who are you?” he said to him. “What? Don’t you know me?” replied the unhappy youth. “But how are you so changed? You look like a devil?” “Ah, pity me; I am damned!” “How is that?” “Well, know that upon leaving that accursed house a devil sprang upon me and strangled me. My body has remained in the middle of the street, and my soul is in Hell. Know, moreover, that the same chastisement awaited you, but the Virgin preserved you from it, thanks to your practice of reciting every day a few Hail Marys in her honour. Happy are you if you know how to profit by this information, which the Mother of God gives you through me.”
While finishing these words, the damned soul partly opened his garment, allowed the flames and serpents that were tormenting him to be seen, and vanished. Then the young man, melting into tears, threw himself on his face on the floor to thank the Holy Virgin Mary, his deliverer. "
- Rev. F.X. Schouppe, ‘Hell’
XX. A Bed of Fire
The sinner lies chained down on a bed of red-hot blazing fire! When a man, sick of fever, is lying on even a soft bed, it is pleasant sometimes to turn round. If the sick man lies on the same side for a long time, the skin comes off, the flesh gets raw. How will it be when the body has been lying on the same side on the scorching, broiling fire for a hundred millions of years! Now look at that body lying on the bed of fire. All the body is salted with fire. The fire burns through every bone and every muscle. Every nerve is trembling and quivering with the sharp fire. The fire rages inside and the skull, it shoots out through the eyes, it drops out through the ears, it roars in the throat as it roars up a chimney. So will mortal sin be punished. Yet there are people in their senses who commit mortal sin!
XXI. Worms
*Is. lxvi. The Worm that dieth not. Judith xvi. “He will give fire and worms into their flesh, that they may burn and feel for ever.” *
St. Basil says, that in hell there are will be worms without number eating the flesh, and their bites will be unbearable." St. Teresa says that she found the entrance into hell filled with these venomous insects. If you cannot bear the sight of ugly vermin and creeping things on the earth, will you be content with the sight of the venomous things in hell, which are a million times worse? The bite or the pricking of one insect on the earth sometimes keeps you awake, and torments you for hours. How will you feel in hell, when millions of them make their dwelling-place in your mouth, and ears, and eyes, and creep all over you, and sting you with their deadly stings through all eternity. You will not then be able to help yourself, or send them away, because you cannot stir hand or foot. One of the most painful stings in the world is to be much frightened.
XXII. Fright
Wisd. xvii. “While they thought to lie hid in their obscure sins, they were horribly afraid and troubled. For neither did the den which held them keep them from fear. For noises coming down troubled them, and sad visions appearing to them, affrighted them.”
- Fr. John Furniss, ‘The Sight of Hell’