It is used as rebellion in the Septuagint in several places. It is NEVER used as a departure from a physical place...only authority:
| Passage | Context |
|---|
| Joshua 22:22 | Israel's concern about rebellion against the LORD |
| 2 Chronicles 29:19 | Objects associated with unfaithfulness during the reign of Ahaz |
| 2 Chronicles 33:19 | Manasseh's unfaithfulness and sins |
| Jeremiah 2:19 | Israel's wickedness and turning away from the LORD |
| 1 Maccabees 2:15 | The king's representatives pressuring Jews to abandon their religious practices |
The two New Testament occurrences
A. Acts 21:21 — “to forsake Moses”
The Greek phrase is:
ἀποστασίαν διδάσκεις ἀπὸ Μωϋσέως
apostasian didaskeis apo Mōuseōs
“You teach … to forsake Moses.”
Paul is accused of teaching Jews living among Gentiles to abandon Moses, including circumcision and Jewish customs. Here, apostasia clearly describes an alleged abandonment of an established religious commitment.
Notice the construction: ἀποστασίαν ἀπὸ Μωϋσέως — apostasian apo Mōuseōs, literally, “apostasy/departure from Moses.”
The word itself does not mean “rapture” in this passage.
B. 2 Thessalonians 2:3 — “the falling away”
The Greek reads:
ἐὰν μὴ ἔλθῃ ἡ ἀποστασία πρῶτον
ean mē elthē hē apostasia prōton
“Unless the apostasy comes first.”
The King James Version translates apostasia as “a falling away.” Other translations use “the rebellion” or “the apostasy.”
The surrounding passage says that the day in question will not come until the apostasia occurs first and the man of lawlessness is revealed.
The key question is whether apostasia here means:
- Religious defection: a departure from the faith or rebellion against God.
- Political or spiritual revolt: a rebellion against established authority.
- Physical departure: a departure from one place, an interpretation proposed by some in discussions of the rapture.
The first two fit the established usage of the noun well. The third is debated, particularly among interpreters who understand this passage to refer to the pretribulation rapture. The word's basic meaning alone does not establish that interpretation.
3. How was apostasia used in the Greek Old Testament?
The Septuagint (LXX), the ancient Greek translation of the Hebrew Scriptures, uses this word in contexts involving rebellion or religious unfaithfulness.
| Passage | Context |
|---|
| Joshua 22:22 | Israel's concern about rebellion against the LORD |
| 2 Chronicles 29:19 | Objects associated with unfaithfulness during the reign of Ahaz |
| 2 Chronicles 33:19 | Manasseh's unfaithfulness and sins |
| Jeremiah 2:19 | Israel's wickedness and turning away from the LORD |
| 1 Maccabees 2:15 | The king's representatives pressuring Jews to abandon their religious practices |
These examples demonstrate that the word family was used for rebellion, defection, and unfaithfulness, not exclusively for the end-times apostasy. Some Greek manuscript traditions have a related noun rather than apostasia in certain Old Testament references, so individual occurrences should be checked against the specific edition.
4. Does apostasia ever mean a physical departure?
This is the important distinction.
The Greek lexicon Liddell–Scott–Jones records the noun as meaning “defection” or “revolt,” and also lists a less common sense of “departure” or “disappearance.” Therefore, it would be inaccurate to claim that physical departure is impossible as a meaning of the Greek word.
However, a possible dictionary meaning is not proof that a particular passage uses that meaning.
In 2 Thessalonians 2:3, the immediate context and the noun's established biblical usage favor rebellion or apostasy. To establish a physical departure interpretation, one would need additional contextual and historical-linguistic evidence.
One final distinction: The related verb ἀφίστημι (aphistēmi, Strong's G868) can mean “depart,” “withdraw,” or “fall away.” That does not automatically make every occurrence of the related noun apostasia a physical departure.
My conclusion: apostasia can express the idea of departure in a broad sense, but its biblical usage most clearly supports defection, rebellion, or abandonment of a religious commitment. Whether 2 Thessalonians 2:3 refers to a specific end-times apostasy is a contextual and interpretive question, not something the word alone settles.
The context is clear...."apostacy" means to depart from the faith. Any other vain attempt at defining it as a physical departure is clutching at straws