G646 — ἀποστασία (apostasía)¶

Core Data¶

Strong's: G646
Original: ἀποστασία
Transliteration: apostasía
Pronunciation: ap-os-tas-ee'-ah
Part of Speech: Feminine noun
Root: From G647 (ἀποστάσιον, apostasion, "a writing of divorcement"), itself from the middle of G868 (ἀφίστημι, aphístēmi, "to stand off from, withdraw, depart, fall away"); compound of ἀπό ("away from") + ἵστημι ("to stand"). Cognate verbal noun formed with the -σία suffix denoting the state or act of the verbal idea.
Occurrences (NT): 2 unique verses (2 tokens), 2 books
First NT Occurrence: Acts 21:21 — "that thou teachest all the Jews which are among the Gentiles to forsake Moses"
Hapax Legomenon: No (dis legomenon in the NT — only two occurrences)

Lexicon Definition¶

Feminine of the same as G647; defection from truth (properly, the state), i.e., (abstractly) apostasy, departure, defection, revolt. The noun denotes not a single act of defection but the condition or event of standing apart from a prior allegiance — religious, political, or covenantal. Both NT uses preserve this core of "abandonment of a previously-held standing position" (Torah-observance in Acts 21:21; obedience to God in 2 Thess 2:3).

Morphologically, ἀποστασία is the nominalized counterpart to ἀφίστημι (G868, the verb "to depart, fall away"). Greek has a parallel form ἀποστάσιον (G647) used for a "certificate of divorce" (Matt 5:31; 19:7; Mark 10:4) — the legal document formalizing a standing-apart. ἀποστασία carries the same underlying image (formal separation from a binding relationship) applied to allegiance rather than marriage.

Louw-Nida Semantic Domain¶

Domain 39 — Hostility, Strife
Subdomain 39.34 — Rebellion
Domain gloss: "to rebel against, to revolt, to engage in insurrection"
Direct subdomain siblings: ἀκαταστασία (G181, insurrection), ἀναστατόω (G387, incite to revolt), ἀφίστημι (G868, go away / cause to rebel), ἐπανίστημι (G1881, rise up against), στάσις (G4714, insurrection), στασιαστής (G4955, insurrectionist), παραπικραίνω (G3893, provoke/rebel), παραπικρασμός (G3894, provocation/rebellion), ὑπεραίρω (G5229, exalt oneself)

The Louw-Nida placement is significant. Lexicographically the word sits in the rebellion/insurrection cluster, not a "departure" or "migration" cluster. The semantic center is willful breach of allegiance, not mere geographical or associational withdrawal.

Translation Distribution (KJV)¶

Translation	Verses	%
forsake	1	50%
falling away	1	50%

Each NT occurrence is translated distinctly by the KJV translators — "forsake" in Acts 21:21 (where the accusative noun governs an infinitive-like sense via context and is rendered verbally) and "falling away" in 2 Thess 2:3 (as an event noun). Neither rendering uses "apostasy" itself, though modern versions frequently do (ESV "rebellion," NASB/NIV "apostasy/rebellion").

Distribution by Book¶

Book	Count	Per 100 Verses
2 Thessalonians	1	2.1
Acts	1	0.1

Patterns: Both occurrences are situated in contexts of accusation and eschatology. Acts 21:21 is a report of a charge against Paul (accusation of inciting apostasy from Moses); 2 Thess 2:3 is an eschatological sign preceding the revelation of the man of lawlessness. The word is absent from the Gospels, Paul's major theological letters (Romans, Galatians, 1 Corinthians), the General Epistles, and Revelation.

Semantic Categories¶

Given only two NT tokens, the "categories" here are the two distinct applications rather than a semantic range within a populated word field.

1. Forsaking a Religious/Covenantal Standard¶

Acts 21:21 — "thou teachest all the Jews which are among the Gentiles to forsake (ἀποστασίαν) Moses, saying that they ought not to circumcise their children, neither to walk after the customs."
Object of the defection: Moses / Mosaic custom (circumcision, τὰ ἔθη).
Speaker's stance: the report is hostile — James and the Jerusalem elders are relaying an accusation against Paul. The word is used to frame a perceived abandonment of ancestral religion.
Grammatical form: accusative singular (ἀποστασίαν), without article, as the accusative of content governed by διδάσκεις ("you teach apostasy from Moses").

2. An Eschatological Event Preceding the Man of Lawlessness¶

2 Thess 2:3 — "Let no man deceive you by any means: for that day shall not come, except there come a falling away (ἡ ἀποστασία) first, and that man of sin be revealed, the son of perdition."
Object of the defection: unspecified in the verse itself; the wider context is "the day of the Lord" (v. 2) and the coming of Christ (v. 1, 8).
Grammatical form: nominative singular with the definite article (ἡ ἀποστασία).
Paired temporally and structurally with the revelation (ἀποκαλυφθῇ, v. 3, 6, 8) of ὁ ἄνθρωπος τῆς ἁμαρτίας / ὁ ἄνθρωπος τῆς ἀνομίας.

The Definite Article in 2 Thessalonians 2:3¶

The article ἡ in ἡ ἀποστασία is grammatically significant and is the single most-debated feature of the word's NT usage.

Article observations (text-level, context-neutral):

Contrast with Acts 21:21. Acts 21:21 uses ἀποστασίαν anarthrously as the content of a charge ("teaching apostasy from Moses"). 2 Thess 2:3 uses the articular form ἡ ἀποστασία as a standalone subject: "the apostasy." The article individuates the noun as a definite, identifiable entity rather than the generic abstract concept.
Greek article with abstract nouns. Greek regularly uses the article with abstract nouns without individuating them (e.g., ἡ ἀγάπη = "love" generically). However, when an abstract noun is the subject of a future verb of arrival and is coordinated with a second articular subject that is clearly a specific individuated referent, the article tends to function as particular rather than generic.
Coordination with ὁ ἄνθρωπος τῆς ἀνομίας. ἡ ἀποστασία stands in grammatical coordination with ὁ ἄνθρωπος τῆς ἀνομίας via the conjoined ἐὰν μὴ…καί structure ("except the apostasy come first, and the man of lawlessness be revealed"). The man of lawlessness is a specific individuated figure. The coordinated subject would normally share that referential specificity.
Anaphoric possibility. The article can be anaphoric ("the apostasy [you already know about]"). 2 Thess 2:5 says "Remember ye not, that, when I was yet with you, I told you these things?" — indicating prior oral teaching the Thessalonians possessed but readers today do not. The article may point to content previously delivered.
Monadic/well-known possibility. The article can mark a noun as monadic or well-known ("the [familiar/expected] apostasy") — a recognized eschatological motif rather than a first-mention introduction.

What the article does NOT decide (context-neutral): The article ἡ by itself does not resolve whether the referent is: (a) a specific future, climactic, eschatologically-unique apostasy event; (b) a particular apostasy known to Paul's readers from prior teaching but not climactic-unique; (c) the generic/abstract act of apostasy as a category marker.

The article establishes definiteness; whether that definiteness is monadic-climactic, anaphoric-known, or generic-abstract must be determined from (i) the immediate literary context (coordinated subjects, temporal markers), (ii) Paul's eschatological teaching elsewhere, and (iii) the OT/Second Temple background of eschatological rebellion motifs. Grammar alone permits all three readings.

Pairing with "the revelation of the man of lawlessness": The syntax ἐὰν μὴ ἔλθῃ ἡ ἀποστασία πρῶτον καὶ ἀποκαλυφθῇ ὁ ἄνθρωπος τῆς ἀνομίας links two subjunctive clauses under a single negated condition. "First" (πρῶτον) attaches to the apostasy's coming; the revelation of the lawless one follows. Whether "first" means (a) "the apostasy precedes the lawless one's revelation as a distinct prior phase" or (b) "both the apostasy and the revelation belong together as the one complex precursor, with the apostasy listed first" is a syntactical question the article itself cannot settle.

LXX Usage (Hebrew Source Background)¶

ἀποστασία is not rare in the Septuagint and Apocrypha, where its usage illuminates the semantic field the NT writers inherited. The word is used to render several Hebrew terms and also appears in originally-Greek compositions.

LXX occurrences of ἀποστασία¶

Reference	Hebrew (MT)	Context
Josh 22:22	מֶרֶד (mered, H4777) + מַעַל (ma'al, H4604)	The Transjordan altar episode — "if it be in rebellion (ἀποστασίᾳ), or if in transgression against the LORD"
2 Chron 29:19	מַעַל (ma'al, H4604)	Vessels cast away in Ahaz's defection: "which king Ahaz in his reign did cast away in his transgression (ἐν τῇ ἀποστασίᾳ αὐτοῦ)"
2 Chron 33:19	מַעַל (ma'al) — so LXX translators	Manasseh's sin and "apostasy" recorded in the prophetic annals
Jer 2:19	מְשׁוּבָה (meshubah, H4878)	"thy backslidings (αἱ ἀποστασίαι σου) shall reprove thee"
1 Esd 2:23 (LXX)	— (Greek composition / paraphrase of Ezra-Nehemiah)	Jerusalem called "a rebellious city" (πόλιν ἀποστάτιν) — related adjective; ἀποστασία in variant tradition for the revolts of the city
1 Macc 2:15	— (Greek)	The officers enforcing "the apostasy" (τὴν ἀποστασίαν) of Antiochus Epiphanes against Jewish worship

Hebrew source words in the LXX¶

Hebrew	Strong's	Gloss	LXX rendering into ἀποστασία
מַעַל	H4604	unfaithful act, treachery, trespass	primary — used in Josh 22:22; 2 Chron 29:19; 33:19
מְשׁוּבָה	H4878	backsliding, turning-away	Jer 2:19
מֶרֶד	H4777	rebellion	Josh 22:22 (paired with ma'al)
מְרִי	H4805	rebellion, bitterness	elsewhere rendered by ἀποστασία-family words (e.g. ἀποστάτης for a rebel)

Pattern of the LXX field: ἀποστασία in the LXX translates three overlapping Hebrew semantic zones: 1. Covenantal treachery (מַעַל) — unfaithfulness where allegiance was owed. This is the dominant register. 2. Backsliding/turning (מְשׁוּבָה) — habitual drift from YHWH. Jer 2:19 "thy backslidings shall reprove thee" connects the word to Israel's corporate unfaithfulness pattern. 3. Active rebellion (מֶרֶד, מְרִי) — overt insurrection.

The 1 Maccabees usage is critical background. 1 Macc 2:15 uses τὴν ἀποστασίαν of the Antiochene persecution — a specific, named, historically-climactic defection from Torah-obedience enforced by a foreign ruler. This establishes a Second Temple usage pattern where ἡ ἀποστασία could refer to a specific, recognized, covenant-breaking historical-prophetic event.

Common Collocations (NT, both verses)¶

Because there are only 2 tokens, every content word that co-occurs does so in 1/2 = 50% of occurrences. The pattern is less statistical than indicative.

Word	Strong's	Co-vv	Where
ἁμαρτία (hamartía) — sin	G266	1x	2 Thess 2:3 "man of sin"
ἄνθρωπος (ánthrōpos) — man	G444	1x	2 Thess 2:3 "man of sin"
ἀποκαλύπτω (apokalýptō) — reveal	G601	1x	2 Thess 2:3 "be revealed"
ἀπώλεια (apṓleia) — destruction, perdition	G684	1x	2 Thess 2:3 "son of perdition"
ἔρχομαι (érchomai) — come	G2064	1x	2 Thess 2:3 "come a falling away"
διδάσκω (didáskō) — teach	G1321	1x	Acts 21:21 "thou teachest"
ἔθνος (éthnos) — nation/Gentile	G1484	1x	Acts 21:21 "among the Gentiles"
ἔθος (éthos) — custom	G1485	1x	Acts 21:21 "after the customs"
Ἰουδαῖος (Ioudaîos) — Jew	G2453	1x	Acts 21:21 "the Jews"
Μωσῆς (Mōsēs) — Moses	G3475	1x	Acts 21:21 "forsake Moses"
περιτέμνω (peritémnō) — circumcise	G4059	1x	Acts 21:21 "circumcise their children"
περιπατέω (peripatéō) — walk	G4043	1x	Acts 21:21 "walk after the customs"

Acts 21:21 cluster: Moses, Jews, Gentiles, circumcision, customs — the cluster of Torah-identity markers from which the alleged apostasy was said to turn. 2 Thess 2:3 cluster: man, sin, reveal, perdition, come — the cluster of eschatological revelation of a hostile figure alongside/after the apostasy.

Word Family / Cognates¶

G647 ἀποστάσιον (apostásion) — writing of divorcement; the formal legal instrument of separation (Matt 5:31; 19:7; Mark 10:4). Same root as ἀποστασία; documents a covenantal-standing separation.
G868 ἀφίστημι (aphístēmi) — verb "to stand away from, depart, withdraw, fall away, incite to revolt." The verbal counterpart; used of departing from God (Heb 3:12 "departing from the living God"), falling away in the last days (1 Tim 4:1 ἀποστήσονταί τινες τῆς πίστεως), and causing revolt (Acts 5:37 of Judas the Galilean).
G2476 ἵστημι (hístēmi) — base verb "to stand"; ἀφίστημι = stand-away, hence ἀποστασία = the state of standing-away.
ἀποστάτης — "apostate, rebel" (related noun; LXX usage; not in KJV Strong's as a numbered headword but cognate).

Synonyms¶

No close lexical synonyms were identified by search_relationships.py; the nearest overlaps remain the rebellion/insurrection terms already listed in the Louw-Nida field and Easily Confused section.

Antonyms¶

No direct antonyms were identified by search_relationships.py.

UBS Semantic Domains¶

[039] Hostility, Strife — includes ἀγών (G73), ἀγωνίζομαι (G75), αἱρετικός (G141), ἀκαταστασία (G181), ἀλλότριος (G245), ἄμαχος (G269)

Easily Confused Words (NT field)¶

Word	Strong's	Shared Semantic Ground	Key Difference
ἀφίστημι	G868	"fall away, depart" — used at 1 Tim 4:1 for end-time defection	verbal form of the same root; describes the act/process rather than the state/event
ἀκαταστασία	G181	"insurrection, disorder, confusion" — same Louw-Nida subdomain	emphasis on disorder/instability, not on covenantal defection
στάσις	G4714	"insurrection, sedition" — same subdomain (Mark 15:7; Acts 19:40)	political/civil insurrection, not specifically religious defection
ἀνομία	G458	"lawlessness" — collocated with ἀποστασία in 2 Thess 2:3 (the "man of lawlessness")	antinomian condition/character vs. the act/event of defection
παράβασις	G3847	"transgression, violation"	specific act of overstepping a law, not defection from allegiance
παραπικρασμός	G3894	"provocation, rebellion" (Heb 3:8, 15) — same subdomain, of Israel's wilderness rebellion	same family but emphasizes provoking to anger
πλάνη	G4106	"deception, error" — near-context concern in 2 Thess 2:3 ("deceive you," ἐξαπατάω)	mental error/deception vs. active defection
διχοστασία	G1370	"division, dissension"	internal split within a group, not defection from the group

Hebrew Sources Mapped to ἀποστασία (LXX)¶

(See LXX table above.) No current canonical study exists for H4604 (ma'al), H4777 (mered), H4805 (meriy), or H4878 (meshubah).

Hebrew Source Summary¶

Hebrew Source	Strong's	Frequency in LXX → ἀποστασία
מַעַל (ma'al)	H4604	primary
מְשׁוּבָה (meshubah)	H4878	occasional (Jer 2:19)
מֶרֶד (mered)	H4777	occasional (Josh 22:22, paired)
מְרִי (meriy)	H4805	occasional (via cognate ἀποστάτης)

Contextual Notes (Text-Level, Not Interpretive)¶

Accusative vs. articular nominative. Acts 21:21 has the accusative ἀποστασίαν (content of a charge, anarthrous); 2 Thess 2:3 has ἡ ἀποστασία (articular nominative subject). The grammatical profile differs.
Both contexts are polemical. Acts 21:21 is an accusation; 2 Thess 2:3 is an apocalyptic warning. The word does not appear in neutral narrative.
Both contexts concern a religious community. Acts 21:21 concerns Jewish Torah-observance; 2 Thess 2:3 concerns the Christian expectation of the day of the Lord. In both, ἀποστασία marks abandonment of a prior covenantal/religious standing.
LXX 1 Macc 2:15 provides the only Second Temple parallel to the articular ἡ ἀποστασία used of a specific, datable covenant-breaking event. That parallel does not determine the referent of 2 Thess 2:3 but documents that such usage was available in Paul's linguistic environment.
Paul's verbal forms. Paul uses the cognate verb ἀφίστημι (G868) in the general sense of departing from faith (1 Tim 4:1 — "some shall depart from the faith," ἀποστήσονταί τινες τῆς πίστεως) and from iniquity (2 Tim 2:19). The 2 Thess 2:3 noun is Paul's only use of the nominal form ἀποστασία.