Who in the world enjoy 'eternal torture'. Christ Jesus died on the Cross of Calvary so that no one need to go there.
Separation from God = eternal torture for those who reject God's plan of Salvation.
However, by the time they get to the other side and they realize what they have done, it is too late.
Therefore, if today, you hear His voice, do not harden your heart.
Who, you ask? There's an interesting collection of examples
here from which I will borrow a couple:
Bishop Newcomb
“The door of mercy will be shut and all bowels of compassion denied, by God, who will laugh at their destruction;
by angels and saints, who will rejoice when they see the vengeance' by their fellow-suffer the devil and the damned rejoicing over their misery.” Catechetical Sermons
Tertullian
“At that greatest of all spectacles, that last and eternal judgment
how shall I admire, how laugh, how rejoice, how exult, when I behold so many proud monarchs groaning in the lowest abyss of darkness; so many magistrates liquefying in fiercer flames than they ever kindled against the Christians; so many sages philosophers blushing in red-hot fires with their deluded pupils; so many tragedians more tuneful in the expression of their own sufferings; so many dancers tripping more nimbly from anguish then ever before from applause."
“What a spectacle. . .when the world. . .and its many products, shall be consumed in one great flame!
How vast a spectacle then bursts upon the eye! What there excites my admiration? What my derision? Which sight gives me joy? As I see. . .illustrious monarchs. . . groaning in the lowest darkness, Philosophers. . .as fire consumes them! Poets trembling before the judgment-seat of. . .Christ! I shall hear the tragedians, louder-voiced in their own calamity; view play-actors. . .in the dissolving flame; behold wrestlers, not in their gymnasia, but tossing in the fiery billows. . .What inquisitor or priest in his munificence will bestow on you the favor of seeing and exulting in such things as these?
Yet even now we in a measure have them by faith in the picturings of imagination.” [De Spectaculis, Chapter XXX]
Augustine
“
They who shall enter into [the] joy [of the Lord] shall know what is going on outside in the outer darkness. . .The saints'. . . knowledge, which shall be great, shall keep them acquainted. . .with the eternal sufferings of the lost.” [The City of God, Book 20, Chapter 22, "What is Meant by the Good Going Out to See the Punishment of the Wicked" & Book 22, Chapter 30, "Of the Eternal Felicity of the City of God, and of the Perpetual Sabbath"]
Thomas Aquinas
In order that the happiness of the saints may be more delightful to them and that they may render more copious thanks to God for it,
they are allowed to see perfectly the sufferings of the damned. . .So that they may be urged the more to praise God. . .The saints in heaven know distinctly all that happens. . .to the damned. [Summa Theologica, Third Part, Supplement, Question XCIV, "Of the Relations of the Saints Towards the Damned," First Article, "Whether the Blessed in Heaven Will See the Sufferings of the Damned. . ."]
“The same fire” (which he decides to be material) “ torments the damned in hell and the just in purgatory…The least pain in purgatory exceeds the greatest in this life.” Summa Theo. Suppl. Qu. 100, acts. 2, n. 3.
Jonathan Edwards
“
The view of the misery of the damned will double the ardour of the love and gratitude of the saints of heaven.”
The sight of hell torments will exalt the happiness of the saints forever. . .Can the believing father in Heaven be happy with his unbelieving children in Hell. . . I tell you, yea! Such will be his sense of justice that it will increase rather than diminish his bliss.
["The Eternity of Hell Torments" (Sermon), April 1739 & Discourses on Various Important Subjects, 1738]
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Tell me, does it seem like these men hear the voice of the Lamb, or have they hardened their hearts?