If any man worship the beast and his image, and receive his mark in his forehead, or in his hand,¹⁰ The same shall drink of the wine of the wrath of God, which is poured out without mixture into the cup of his indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb:¹¹ And THE SMOKE OF THEIR TORMENT ASCENDETH UP FOR EVER AND EVER: AND THEY HAVE NO REST DAY NOR NIGHT, who worship the beast and his image, and whosoever receiveth the mark of his name.¹² Here is the patience of the saints: here are they that keep the commandments of God, and the faith of Jesus.
–Revelation 14:9-12 (KJV)–

The devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever.¹¹ And I saw a great white throne, and him that sat on it, from whose face the earth and the heaven fled away; and there was found no place for them.¹² And I saw the dead, small and great, stand before God; and the books were opened: and another book was opened, which is the book of life: and the dead were judged out of those things which were written in the books, according to their works.¹³ And the sea gave up the dead which were in it; and death and hell delivered up the dead which were in them: and they were judged every man according to their works.¹⁴ And death and hell were cast into the lake of fire. This is the second death. ¹⁵ And 
WHOSOEVER WAS NOT FOUND WRITTEN IN THE BOOK OF LIFE
WAS CAST INTO THE LAKE OF FIRE.
–Revelation 20:10-15 (KJV)–

The fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone:
which is the second death.   
–Revelation 21:8 (KJV)–

He that is unjust, let him be unjust still: and he which is filthy, let him be filthy still: and he that is righteous, let him be righteous still: and he that is holy, let him be holy still. And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be. 
–Revelation 22:11-12 (KJV)–

—

John Wesley, “Letter to William Law.” Jews, Mohametans, Deists, Heathens, are all members of the Church of Christ! Should we not add devils too?…There can hardly be any doctrine under Heaven more agreeable to flesh and blood; nor any which more directly tends to prevent the very dawn of conviction…These are your arguments to prove that Christ is in every man — a blessing which St. Paul thought was peculiar to believers. He said, ‘Christ is in you except ye be reprobates,’ unbelievers (2 Cor. 13:5, KJV). You say, Christ is in you whether ye be reprobates or no. ‘If any man hath not the Spirit of Christ, he is none of His,’ saith the Apostle (Romans 8:9, KJV). Yea, but ‘every man,’ saith Mr. Law, ‘hath the Spirit of God. The Spirit of Christ is in every soul’ (Spirit of Prayer, Part I. p. 63). ‘He that hath not the Son of God hath not life,’ saith St. John (1 John 5:12, KJV). But Mr. Law saith, ‘Every man hath the Son of God.’ Sleep on, then, ye sons of Belial, and take your rest; ye are all safe: for ‘he that hath the Son hath life.’

—. “Of Hell.”

Charles G. Finney, “Doubtful Actions Are Sinful.” Then the Universalist. Where is one who can say he has not so much as a doubt whether there is not a hell, where sinners go after death into endless torment. He is bound to stop and inquire, and search the Scriptures. It is not enough for him to say he does not believe in a hell. It may be there is, and if he rejects it, and goes on reckless of the truth whether there is or not, that itself makes him a rebel against God. He doubts whether there is not a hell which he ought to avoid, and yet acts as if he was certain and had no doubts. He is condemned. I once knew a physician who was a Universalist, and who has gone to eternity to try the reality of his speculations. He once told me that he had strong doubts of the truth of Universalism, and had mentioned his doubts to his minister, who confessed that he, too, doubted its truth, and he did not believe there was a Universalist in the world who did not…The hypocrite is unwilling to be enlightened, he does not wish to know the truth, because he don’t wish to obey the Lord, and so he hides behind his doubts, and turns away his eye from the light, and will not look or examine to see what his duty is, and in this way he tries to shield himself from responsibility. But God will drag them out from behind this refuge of lies, by the principle laid down in the text, that their very doubts condemn them.

—. “On Trusting In the Mercy of God.”

—. “The Wages of Sin.”

Drs. Joel Beeke and Paul Smalley, Reformed Systematic Theology: Church and the Last Things, Volume 4 (Crossway, 2024), ch. 39: “Eternal Punishment in Hell, Part 2: Objections and Applications.”

Drs. Christopher Morgan and Robert Peterson, Hell Under Fire: Modern Scholarship Reinvents Eternal Punishment (Zondervan, 2004), ch. 8: “Universalism: Will Everyone Ultimately Be Saved?” (J. I. Packer).

Dr. Robert Peterson, Hell on Trial: The Case for Eternal Punishment (P&R Publishing, 1995), ch. 8: “False Witnesses (1): Universalism.”

Dr. William G. T. Shedd, The Doctrine of Endless Punishment (Charles Scribner’s Sons, 1886), pp. 94-117. Addresses the universalists’ “Greek word translation” objection about for ever.

Dr. John R. Rice, Hell: What the Bible Says About It (Sword of the Lord, 1945).

Dr. John Walvoord, “The Literal View,” in Four Views on Hell (Zondervan, 1996).

Harry Buis, The Doctrine of Eternal Punishment (P&R Publishing, 1957), ch. 7: “Denials and Their Answers.”

Denny Burk, “Eternal Conscious Torment,” in Four Views on Hell (Zondervan, 2016).