θνητός

mortal

Definition

θνητός (thnētos) fundamentally means 'mortal' or 'subject to death,' describing the inherent, perishable nature of human physical life in contrast to the immortal divine nature. In the New Testament, it consistently refers to the human body or existence as destined for death, as seen in Romans 6:12 where believers are urged not to let sin reign in their 'mortal body.' The word gains profound theological weight in passages like 1 Corinthians 15:53-54, where Paul declares that 'this mortal must put on immortality,' using it to describe the perishable body that will be transformed at the resurrection. In 2 Corinthians 5:4, it expresses the groaning of being burdened by mortality itself.

Biblical Usage

The adjective θνητός is used exclusively by the Apostle Paul, appearing six times in his letters to the Romans, 1 Corinthians, and 2 Corinthians. Its usage consistently contrasts human mortality with divine life and resurrection. In Romans 8:11, it describes the mortal body that God's Spirit will give life to. In 1 Corinthians 15:53-54, it is used twice in a triumphant eschatological context about the victory over death. In 2 Corinthians, it appears in passages (2 Corinthians 4:11; 5:4) discussing the suffering and fragility of apostolic life, which paradoxically manifests the life of Jesus.

Etymology

Derived from the Greek verb θνῄσκω (thnēskō, G2348), meaning 'to die.' The suffix -τος forms an adjective indicating capability or susceptibility, thus θνητός literally means 'liable to die' or 'subject to death.' It is the direct antonym of ἄφθαρτος (aphthartos, G862), meaning 'imperishable' or 'immortal,' a pairing Paul explicitly uses in 1 Corinthians 15:53-54.

Semantic Range

This word is theologically central to the biblical anthropology of humanity's fallen, perishable state and the Christian hope of resurrection. It underscores the universal human condition of mortality as a consequence of sin (Romans 5:12), making Christ's victory over death and the promise of bodily transformation (1 Corinthians 15) all the more significant. Understanding θνητός enriches reading by highlighting the stark contrast between human frailty and God's immortal, life-giving power, framing salvation as a rescue from mortality itself into eternal life.

In the Greco-Roman world, the concept of mortality was a common philosophical and literary theme, often expressing human limitation and fate. However, Paul's use is distinctively shaped by Jewish and Christian eschatology. Unlike some Greek philosophical traditions that saw the mortal body as a prison for the immortal soul, the biblical view presented by Paul sees the mortal body as part of God's good creation that is destined for redemption and transformation, not escape.

ἀσθενής (asthenēs, G772) — emphasizes weakness or infirmity, often of the body, but not exclusively tied to death. φθαρτός (phthartos, G5349) — means 'perishable' or 'corruptible,' focusing on decay and destruction, closely related but not identical to mortality (used alongside it in 1 Corinthians 15:53-54).

Word Details

Scripture References