αἰώνιον

aionion

eternal

from αἰών; perpetual (also used of past time, or past and future as well):--eternal, for ever, everlasting, world (began).

G166

John 5:39 · Word #10

Lexicon G166

Lemmaαἰώνιος
Transliterationaiṓnios
Strong'sG166
In-contexteternal
Literaleternal

Morphology ADJ.A ACC F SG All morphology codes

Part of Speech ADJ.A — Attributive Adjective — Describes a noun directly
Case ACC — Accusative — Direct object or extent
Gender F — Feminine — Grammatical feminine
Number SG — Singular — One

Lexical Info

Lemmaαἰώνιος
Strong'sG166

SIBI-P1 G166-04

the age-abiding (thing)

Rootαἰώνιος (aiōnios)
Core Meaningsage-long, age-abiding, perpetual, belonging to an age
Semantic Rangelasting for an age, perpetual, enduring, eternal, belonging to the age to come, world-related (in certain contexts)
Conceptual SignificanceIn biblical theology, αἰώνιος often contrasts the present age with the age to come, marking realities that partake in or characterize the coming age of God’s reign. It shapes key doctrines such as "age-abiding life" and "age-abiding judgment," emphasizing covenantal destiny and eschatological fulfillment rather than merely abstract endless duration.
Morphological NotesAdjective, accusative singular (ANS = accusative neuter singular; AFS = accusative feminine singular). It agrees with a feminine or neuter noun in the accusative case, describing the direct object of a verb.
Rendering RationaleThe adjective derives from αἰών ("age, epoch"), so "age-abiding" preserves the root idea of enduring through or pertaining to an age rather than abstract infinity. The form αἰώνιον is accusative singular (feminine or neuter in these occurrences), functioning as a direct object and thus rendered as "the age-abiding (thing)" to reflect its case and number.

AI-generated (openai/gpt-5.2-chat-latest)

Words from Root αἰώνιος (age-long, age-abiding, perpetual, belonging to an age)

SILEX Code Transliteration SIBI-P1
G166-01 aionia the Age-abiding things
G166-02 aionian age-abiding (feminine singular, accusative)
G166-03 aioniois to the age-abiding (ones)

Word Usage (70 occurrences of G166)

Location Form Transliteration Meaning
Matthew 18:8 αἰώνιον aionion
Matthew 19:16 αἰώνιον aionion
Matthew 19:29 αἰώνιον aionion