ἀποστασία

defection, apostasy

Definition

ἀποστασία refers to a deliberate, willful departure or rebellion from a previously held position or allegiance. In the New Testament, it specifically denotes a religious or political defection. In Acts 21:21, it describes Paul being accused of teaching Jews to 'abandon' or 'fall away' from the Law of Moses. In 2 Thessalonians 2:3, it carries a more profound theological weight, referring to 'the rebellion' or 'the apostasy,' a widespread, end-times falling away from the faith preceding the day of the Lord.

Biblical Usage

This word is used only twice in the New Testament, but in two distinct contexts that show its range. In Acts 21:21, it is used in a Jewish religious context regarding the Mosaic Law. In 2 Thessalonians 2:3, it is used in a Christian eschatological context, describing a future, large-scale abandonment of the truth of the gospel. Both uses imply a decisive and active turning away from a previously established commitment.

Etymology

Derived from the verb ἀφίστημι (aphistēmi, G868), meaning 'to cause to revolt, to desert, or to withdraw.' It is a compound of ἀπό (apo, 'away from') and ἵστημι (histēmi, 'to stand'). Literally, it means 'a standing away from' or 'a removal.' This root clearly conveys the idea of a positional shift from a former stance.

Semantic Range

This word is theologically significant as it defines the serious sin of apostasy—a conscious, willful rejection of God and His truth after having known it. In 2 Thessalonians 2:3, it is linked to end-times prophecy, indicating a final, organized rebellion against God. Understanding this Greek term highlights that biblical apostasy is not mere doubt or struggle, but a decisive act of defection from the faith.

In the Greco-Roman world, the term could be used for political rebellion or desertion from an army, carrying connotations of treason and betrayal. This cultural backdrop of disloyalty and revolt deeply informs its biblical usage, elevating the seriousness of turning away from God's covenant (the Law) or the revealed truth of Christ.

παραβάτης (parabatēs, G3848) — a transgressor or law-breaker, focusing on the violation of a standard, while ἀποστασία emphasizes the act of desertion itself. πλάνη (planē, G4106) — error or deceit, focusing on the false belief that leads one astray, whereas ἀποστασία focuses on the act of departure.

Word Details

Scripture References