StrongerBible

aiōnios

αἰώνιος

GreekG0166“eternal, everlasting”

Appears 71 times · tap a cell to see the verses

Mat 18:8Mat 19:16Mat 19:29Mat 25:41Mat 25:46 (2×)Mrk 3:29Mrk 10:17Mrk 10:30Mrk 16:8Luk 10:25Luk 16:9Luk 18:18Luk 18:30Jhn 3:15Jhn 3:16Jhn 3:36Jhn 6:68Jhn 12:50Jhn 17:3Act 13:46Rom 6:23Rom 16:25(14:24)Rom 16:26(14:25)2Co 4:172Co 4:182Th 1:92Th 2:161Ti 6:121Ti 6:162Ti 1:92Ti 2:10Tit 1:2 (2×)Tit 3:7Phm 1:15Heb 5:9Heb 6:2Heb 9:12Heb 9:14Heb 9:15Heb 13:201Jn 5:20Jud 1:7Rev 14:6
Root family
Word studyResearch-gradeeye-OH-nee-osadjective

What aiōnios means

belonging to the age to come, and so without end: everlasting, eternal

TranslatabilityPartialCertaintyStrong

This word is the adjective formed from the noun for an age or epoch (αἰών), so at its root it means "belonging to an age" or "lasting for an age." That is looser than the English "eternal," which can suggest a timeless state standing outside of time altogether. In the New Testament the age in view is overwhelmingly the coming age of God, the unending order that begins with the resurrection, so the word carries two ideas at once that English struggles to hold together. One is sheer duration: something whose end is simply not in view, and that, when tied to God, has no end at all. The other is quality: not just life that lasts forever, but the life of God's new age, a different kind of life altogether.

This is why "eternal life" in John and Paul is not merely survival without end. It is the life of the age to come, already breaking into the present for those who trust Christ, and only fully arriving later. The duration is real, but the emphasis often falls on the quality and the source: it is God's own life, shared.

The same word points the other direction too. When it describes fire, punishment, or ruin, it names the lasting consequence that belongs to that final age, the settled outcome on the far side of judgment. And it describes God himself and the realities tied to him: his glory, his covenant, his gospel, the redemption Christ secured once for all. In every case the thread is the same: this thing belongs to, and shares the permanence of, the age that does not pass away.

Nuances

1athe unending life of the coming age, God's own life shared with those who trust Christ; not mere survival but a new kind of life that believers begin to have now
Mat 19:16Mat 19:29Mrk 10:17Mrk 10:30Luk 10:25Luk 18:18Luk 18:30Jhn 3:15Jhn 3:16Jhn 3:36Jhn 4:14Jhn 4:36
1bthe unending consequence that belongs to the final judgment: lasting fire, punishment, ruin, or guilt on the far side of God's verdict
Mat 18:8Mat 25:41Mat 25:46 (2×)Mrk 3:292Th 1:9Heb 6:2Jud 1:7
1cbelonging to God and his settled, unending order: his glory, covenant, gospel, kingdom, and the redemption and inheritance secured in Christ once for all
2Co 4:172Co 4:182Co 5:12Th 2:161Ti 6:162Ti 1:92Ti 2:10Phm 1:15Heb 5:9Heb 9:12Heb 9:14Heb 9:15

What scholars say about aiōnios

The adjective is built from the noun aiōn (life, lifetime, age), where infinity is not a built-in feature: an aiōn can be a bounded human lifespan or the whole of time, and context decides which. The standard lexica reflect this range rather than resolving it. LSJ glosses aiōnios "lasting for an age, perpetual, eternal"; BDAG distinguishes a long period of time, the genuinely eternal (of God), and the unending. Moulton and Milligan, surveying the papyri and inscriptions where the word serves as a stock epithet of imperial power, conclude that it depicts that of which the horizon is not in view, whether infinitely distant or only as far off as a Caesar's reign. In the Septuagint aiōnios became the near-automatic rendering of Hebrew ʿolam, a word for the far, out-of-sight horizon of time (Jenni's Extrembegriff), and Daniel 12:2 supplies the first clear instance of zōē aiōnios in a resurrection setting, the phrase the Gospels take up. Vos and Ladd tie New Testament "eternal life" to the two-age scheme as the life of the coming age; Dodd, Bultmann, and after them Barrett, Brown, Carson, Thompson, and Frey debate how far John's eternal life is already present, settling on a both/and. The sharpest recent dispute is Ramelli and Konstan's Terms for Eternity, which catalogues aiōnios against the stricter aïdios and argues for an age-bounded sense with consequences for the doctrine of final punishment; critics including Pakaluk and McClymond press Matthew 25:46 and the New Testament's own use of aïdios in a judgment context (Jude 6) against them. Across the whole field, Barr's warning against settling the question by etymology, his "illegitimate totality transfer," cuts against pouring either "timeless eternity" or "mere age" into every instance.

Where scholars disagree about aiōnios

Whether the New Testament's aiōnios means "everlasting, without end" or more narrowly "belonging to the coming age," and whether the second sense leaves the duration of final punishment open. The same adjective describes both eternal life and eternal punishment, so the question carries directly into the doctrine of hell.

  • majorityThe word effectively means "everlasting." Where it describes God's coming age it does carry the connotation "of the age to come," but that age has no end, so the two senses amount to the same thing; final punishment is therefore unending. Matthew 25:46, where the one adjective governs both the punishment and the life in a single sentence, is the standing argument that the word cannot mean endless for the one and limited for the other.; Augustine, De Civitate Dei 21.23; Michael Pakaluk, response in Bryn Mawr Classical Review 2009.02.51; Michael J. McClymond, The Devil's Redemption (Baker Academic, 2018)
  • minorityThe word stays tied to its root sense "of the age," in contrast to the stricter Greek word for strict endlessness; eternal life can be called by that stricter word but future punishment is only ever called aiōnios, an asymmetry that is at least consistent with punishment belonging to an age that may come to an end.; Ilaria L. E. Ramelli and David Konstan, Terms for Eternity (Gorgias, 2007); Ilaria L. E. Ramelli, The Christian Doctrine of Apokatastasis (Brill, 2013); David Bentley Hart, That All Shall Be Saved (Yale University Press, 2019)
  • minorityWhen the word describes fire, destruction, or punishment it can name the permanence of the result rather than an experience that never ends: the outcome is final and irreversible, "eternal" in its effect. Jude 7, where Sodom's "eternal fire" is plainly no longer burning, is the favored example.; Edward W. Fudge, The Fire That Consumes, 3rd ed. (Cascade, 2011); Richard Bauckham, Jude, 2 Peter, Word Biblical Commentary 50 (Word, 1983), on Jude 7
In-depth research

This is a research paper, so it may be hard to read without scholarly background. It is useful if you want to dig even deeper into this word.

Sources

  • BDAG, s.v. αἰώνιοςlexicon
  • LSJ, s.v. αἰώνιοςlexicon
  • H. Sasse, "αἰών, αἰώνιος," TDNT 1:197-209theological-dictionary
  • E. Jenni, "αἰώνιος," EDNT 1:46-48theological-dictionary
  • J. H. Moulton and G. Milligan, The Vocabulary of the Greek Testament, s.v. αἰώνιοςlexicon
  • Ilaria L. E. Ramelli and David Konstan, Terms for Eternity: aiônios and aïdios in Classical and Christian Texts (Gorgias, 2007)monograph
  • James Barr, The Semantics of Biblical Language (Oxford University Press, 1961), 218monograph
  • George Eldon Ladd, A Theology of the New Testament (Eerdmans, 1974)monograph
  • Michael J. McClymond, The Devil's Redemption (Baker Academic, 2018)monograph

AI-generated word study · claude-opus-4-8

All attested forms of αἰώνιος

accusative f s

αἰώνιον, αἰωνίαν

Mat 19:16, Mat 19:29, Mat 25:46, Mat 25:46, Mrk 10:17, Mrk 10:30, Luk 10:25, Luk 18:18

genitive f s

αἰωνίου

Mrk 16:8, Jhn 6:68, Act 13:46, 1Ti 6:12, 2Ti 2:10, Tit 1:2, Tit 3:7, Heb 5:9

accusative n s

αἰώνιον

Mat 18:8, Mat 25:41, 2Co 4:17, Rev 14:6

genitive n s

αἰωνίου

Mrk 3:29, Heb 6:2, Heb 9:14, Jud 1:7

nominative f s

αἰώνιος, αἰώνιός

Jhn 17:3, Rom 6:23, 1Jn 5:20, Jhn 12:50

accusative m s

αἰώνιον

2Th 1:9, Phm 1:15

genitive m p

αἰωνίων

2Ti 1:9, Tit 1:2

accusative f p

αἰωνίους

Luk 16:9

dative m p

αἰωνίοις

Rom 16:25

genitive m s

αἰωνίου

Rom 16:26

nominative n p

αἰώνια

2Co 4:18

nominative n s

αἰώνιον

1Ti 6:16