Is it possible to have a serious problem and just not know it? I think it is. Your answer was that Paul really didn't get the man of sin revealed. Yet I showed many English translations that disagree with that.
No, your interpretation of those English translations disagrees with that.
Why do you equate "the second coming of Christ" with "The day of the Lord." Can you find a verse that makes these terms synonymous? In 1 Thes. 4 I see a coming and I see Paul tell us 3 verses later about the Day of the Lord. I understand that the rapture will be the trigger (so to speak) for the start of the Day of the Lord. But this is not making the terms synonymous. One comes before the other. Ah! Perhaps it is the "sudden destruction" that comes with the rapture? What do you make of that sudden destruction? Perhaps you think they all happen at the same time with Christ's coming to Armageddon?
Have you somehow not seen the many times I have explained this already? I'm not going to go into as much depth on it right now as I have already done before, but, first, it's important to point out that there were no chapter breaks in the original Greek text. I think it was a mistake to put a chapter break between the end of 1 Thess4 and beginning of 1 Thess 5.
Notice in 1 Thess 5:1 that Paul, right after talking about the coming of the Lord to meet His people in the air, says, "Now, brothers and sisters, about times and dates we do not need to write to you". About times and dates of what? In my view, he was clearly referring to what he had just been talking about, namely the second coming of Christ. There was no point in writing to them about times and dates because he knew that Jesus said that no one knows the day or hour of His coming. And then in verse 2 he proceeds to contrast what will happen to unbelievers on that day compared to what he had already said would happen to believers.
The only thing verse 3b is saying about timing in relation to the second coming of Christ...
3b only tells us that the man of sin is revealed (not in reality but in Paul's argument.)
The entire verses tells us that the day of the Lord (that dark day of destruction) cannot come until there is a significant departing first and then the man of sin is revealed.
And this is the exact timing I see in Revelation: the rapture or departing just before the Day, or a moment before the 6th seal, then the Day begins, and then the man of sin will be revealed. So at the time of the revealing, the DAY is certainly present.
At the sixth seal the time of Christ's wrath is about to come down at that point. That's why it figuratively talks about people wanting mountains and rocks to fall on them to avoid His wrath. The reason there is silence in heaven at the 7th seal is because Jesus and His angels will have left heaven to gather His people and to deliver His wrath upon unbelievers at that time.
the man of sin being revealed can't happen after the rapture and the falling away from the faith happens first.
Since the man of sin cannot be revealed until the Holy Spirit is taken out of the way (It sounds strange to say the second person of the Godhead is "taken" anywhere) - and His really is taken out of the way as the CHURCH is taken out of the way - because He resides in each believer, then it makes sense that the departing (of the church) must come before the revealing.
It's not that the Holy Spirit will literally be taken out of the way. It's His influence over people that will be taken out of the way. Do you know how the Bible elsewhere talks about God being patient with people but eventually no longer wanting to contend with Him through His Spirit? That's what I believe the Holy Spirit being taken away is about - something similar to what God has done before when He has run out of patience with people and gives them over to their wickedness.
Do you really believe there is going to be a very significant falling away from the faith?
Of course I do. Haven't I made that clear by now? What do you think that Jesus meant when He said the days before His coming would be like the days of Noah? What do you think He meant by this:
Matt 24:12
Because of the increase of wickedness, the love of most will grow cold, 13 but the one who stands firm to the end will be saved.
Worldwide the church is GROWING, not falling away. I believe it will continue in that direction. Sure, some fall away, but two come in when one falls away. I think the KJV did a terrible job of translating there. There is a huge difference in "some shall depart" and a very significant departing.
I believe you are delusional to believe that. Homosexuality is becoming acceptable to the masses. Sexual immorality is clearly on the rise. I can discern that wickedness is on the rise and, honestly, it's troubling to me that you can't see it.
This brings up a question: how in the world would anyone trying to follow Paul's "formula" know when enough had fallen away to say: "Ah! This is what Paul was talking about!" It would seem it would have to be sudden and much of the church at the same time. On the other hand, no one will have to guess if the rapture came.
There is no magic formula for that and nothing in the text indicates as such. We need to do what he and Jesus said by watching what's going on and using discernment.