ἀΐδιος

eternal

Definition

The adjective ἀΐδιος means 'eternal' or 'everlasting,' describing something that exists without beginning or end, or for an immeasurably long duration. In the New Testament, it specifically characterizes the eternal nature of God's power and divine nature (Romans 1:20) and the everlasting chains of judgment reserved for rebellious angels (Jude 1:6). In both uses, it underscores a quality that is perpetual and transcends time, belonging properly to the divine realm.

Biblical Usage

This word is used only twice in the New Testament. In Romans 1:20, it describes God's 'eternal power and divine nature,' which are perceived through creation. In Jude 1:6, it modifies the 'eternal chains' of darkness where angels are kept for judgment. Both instances appear in contexts emphasizing divine judgment and revelation, linking God's eternal attributes to His just and sovereign actions.

Etymology

Derived from the Greek noun αἰών (aiōn, G165), meaning 'age' or 'eternity.' The adjective form ἀΐδιος essentially means 'pertaining to an age' or 'age-long,' and by extension came to denote 'everlasting' or 'eternal.' It is related to the more common New Testament adjective αἰώνιος (aiōnios, G166), which also means 'eternal,' though ἀΐδιος is rarer and carries a strong classical philosophical connotation of timelessness.

Semantic Range

This word is theologically significant as it directly attributes eternality to God's very nature and power (Romans 1:20), forming a basis for natural revelation. It also connects God's eternal character to His eternal judgment (Jude 1:6), showing that both His being and His justice are timeless. Understanding this Greek term enriches reading by highlighting that the 'eternal' things Scripture speaks of are not merely long-lasting but are intrinsic qualities of the divine realm, fundamentally different from temporal creation.

In Greek philosophical and literary tradition, ἀΐδιος was used to describe the timeless, unchanging nature of the divine, the cosmos, or abstract principles. The New Testament's use taps into this understanding to communicate God's transcendence over time to a Hellenistic audience. This contrasts with some modern, diluted notions of 'eternal' as simply 'a very long time,' reinforcing its absolute, unending quality.

αἰώνιος (aiōnios, G166) — The more frequent New Testament term for 'eternal,' often used for eternal life or punishment; it can emphasize duration through ages, while ἀΐδιος may stress timeless essence.

Word Details

Scripture References