"What is the apostasy? The Greek word apostasia in 2 Thessalonians 2:3 means “departure, falling away, defection, revolt.” This end times’ apostasy could be the mass “falling away” of people from God as they begin to follow the lawless one who claims to be God (verse 4). Another possibility is that the “apostasy” is the “departure” of the church from the world, that is, the rapture that Paul alludes to in verse 1 and which he had previously discussed in 1 Thessalonians 4:13–18. It could be that both events are implied in the word apostasia."
Is it possible that "apostasia" could really imply both the rebellion and the rapture?