Anyone not found written in the Book of Life
was cast into the lake of fire.
–Revelation 20:15 (NKJV)–

The cowardly, unbelieving, abominable, murderers, sexually immoral, sorcerers, idolaters, and all liars shall have their part in the lake which burns with fire and brimstone.
–Revelation 21:8 (NKJV)–

The smoke of their torment ascends forever and ever;
and they have no rest day or night.
–Revelation 14:11 (NKJV)–

—

Jonathan Edwards, The Wrath of Almighty God. Ed. Don Kistler (Soli Deo Gloria, 1996).

—. The Torments of Hell: Jonathan Edwards on Eternal Damnation. Ed. William Nichols (International Outreach, 2006).

John Gerstner, Heaven and Hell: Jonathan Edwards on the Afterlife (Baker Books, 1984)

—. Repent or Perish: With a Special Reference to the Conservative Attack on Hell (Soli Deo Gloria, 1990).

John Wesley, “Of Hell.”

George Whitefield, “The Eternity of Hell-Torments.”

Charles Finney, “The Wages of Sin,” Sermons On Gospel Themes.

—. “The Rich Man and Lazarus,” Sermons On the Way of Salvation.

Charles Spurgeon, Sermons on Heaven and Hell (Hendrickson, 2016).

Robert Peterson, Hell on Trial: The Case for Eternal Punishment (P&R, 1995).

—. and Christopher Morgan, eds. Hell Under Fire (Zondervan, 2004).

—. and Christopher Morgan, eds. Is Hell for Real or Does Everyone Go to Heaven? (Zondervan, 2011).

W.G.T. Shedd, The Doctrine of Endless Punishment (The Banner of Truth Trust, 1986).

Thomas Vincent, Fire and Brimstone (Soli Deo Gloria, 1999).

Westminster Confession of Faith (The Banner of Truth Trust), chs. 10.3-4; 32-33.

John Blanchard, The Truth About Hell (Evangelical Press, 2017).

—. Whatever Happened to Hell? (Evangelical Press, 1993).

John R. Rice, Hell! What the Bible Says About It (Sword of the Lord Publishers, 1942).

Harry Buis, The Doctrine of Eternal Punishment (P&R, 1957).

Joel Beeke and Paul Smalley, eds. Reformed Systematic Theology: Church and the Last Things, vol. 4 (Crossway, 2019), ch. 39.

David Bercot, ed. A Dictionary of Early Christian Beliefs (Hendrickson, 1998), p. 242ff.