The idea has been in the background for years.
"Does it really matter when or even if a "rapture" occurs?"
Yes, it does. It does not "make it or break it" concerning our salvation. You can be wrong on this and still be saved. But it does matter when it comes to both your doctrinal and spiritual maturity.
Consider Heb 6:1-3
Hebrews 6:
1 KJV Therefore leaving the principles of the doctrine of Christ, let us go on unto perfection; not laying again the foundation of repentance from dead works, and of faith toward God,
2 Of the doctrine of baptisms, and of laying on of hands, and of resurrection of the dead, and of eternal judgment.
3 And this will we do, if God permit.
Here, the author lists the 6 "Elementary," "foundational," "milk," "first principles of the oracles of God."
This is only the baby food.
- repentance from dead works,
- faith toward God,
- the doctrine of baptisms
- laying on of hands,
- resurrection of the dead,
- eternal judgment.
He calls us to proceed from these "baby food" doctrines" to mature "meat" doctrines. (Context suggests that the Priesthood would be part of the mature "meat" doctrines.)
But the point is, these are called baby food, which is intended for babies. Among the babyfood is teaching about "the resurrection of the dead." Which would include the resurrection of living and sleeping believers.
But the most important point with regard to our discussion is verse 3.
"And this we will do if God permit."
Before going on to the "mature, meat" doctrines, we must be well versed in the "elementary, baby doctrines." If you are not well versed in these baby doctrines,
God may not allow you to proceed! So, misunderstanding this "rapture" theory may actually prevent you from going on to the mature meat doctrine and greater spiritual maturity.
Why? Because if you are stuck in the milk diet, then heavy meat will cause you to choke. Paul even warns us specifically
not to be deceived about the timing of this event. He suggests holding to a "pre-falling away," "pre-man of sin," and "pre-trib rapture" view may result in harm to believers.
2 Thessalonians 2:
2 KJV That
ye be not soon shaken in mind, or be troubled, neither by spirit, nor by word, nor by letter as from us, as that the day of Christ is at hand.
3 L
et no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition;
So, for people who want to mature both in the word and spiritually,
it does matter what you believe.