Punishment, Everlasting
The doctrine of everlasting punishment holds that the wicked face eternal, conscious consequences as the result of divine judgment. The primary NT texts are Matthew 25:46 ('these will go away to eternal punishment, but the righteous to eternal life') — where the same word (aionios, eternal) describes both destinies; Mark 9:43-48, where 'hell' is described three times with the phrase 'where the worms that eat them do not die, and the fire is not quenched' (quoting Isa. 66:24); Revelation 14:10-11 (the torment of those who worship the beast 'will rise for ever and ever'); and Revelation 20:10 (the devil, beast, and false prophet 'will be tormented day and night for ever and ever').
Three main positions exist in Christian theology: (1) eternal conscious punishment — the traditional majority view, holding that the damned suffer consciously without end; (2) annihilationism (or conditional immortality) — the view that the wicked are ultimately destroyed rather than punished eternally, citing 'the second death' (Rev. 20:14), 'perish' (John 3:16), and 'destruction' (2 Thess. 1:9) as implying cessation of existence; (3) universalism — the view that all will ultimately be reconciled to God. ISBE presents the traditional view as grounded in Matthew 25:46's parallel structure (where aionios must mean the same duration for punishment and life) and Revelation's explicit 'forever and ever' language for conscious torment. The doctrine is inseparable from the biblical account of divine justice and the genuine moral weight of human choices with eternal consequences.