The word "parousia" is used also of the arrival/advent/presence of "the man of sin," also, as you may recall from my post.
"Parousia" is used both of Jesus' presence where "we" will go to the meeting of the Lord "IN THE AIR" (our Rapture) AND of His presence at the time of His Second Coming to the earth, depending on:
1) context, 2) location, and 3) in whose presence He will be...
(when it is "in the air" [at our Rapture] He will be in no one else's presence besides "the Church which is His body" who is "caught up" there [and so shall we ever be "WITH [G4862 - syn - denoting 'UNION' with] the Lord" [contrasted with the "WITH [G3326 - meta - accompanying]" word used of the "5 Virgins [PLURAL]" who go in with Him to "the wedding FEAST/SUPPER" (earthly MK) whom He is not "MARRYING," upon His "return" to the earth as an already-wed "Bridegroom": the distinction between Rev19:7 [pertaining to "the Bride/Wife [SINGULAR]" and the MARRIAGE itself, in Heaven, and AORIST at the time of Rev19] and 19:9 [pertaining to "the guests [PLURAL]" and the marriage FEAST/SUPPER, which is NOT aorist but where He is headed down TO "WITH [G4862 - 'unioned' with]" His already-wed "Bride/Wife [SINGULAR]" [at that time, Rev19],
Still, this is one of those scenarios where it appears you would interpret the grammar this way only if you were pre-trib. One of the problems with your argument is that you have to throw out a bunch of Greek terms and really argue minutia that most readers on here will not be able to follow. What level of Classical or Koine Greek language education do you have? I have an acquaintance who was chair of Greek at a state university who is a believer who often lamented about the Greek arguments preachers made and liked to use Rashi's method of showing counter examples from actual texts to disprove these arguments. I recall his making a crack online about 'Baptist aorists.'
I look at Revelation 19:7, and it does make sense to put this in a past tense if the time for the wedding has arrived, and then Jesus comes back, as He does not too many verses later. The time has come, the announcement is made, then it happens. This is more an issue of semantics than Greek grammar, IMO. The aorist can be used to refer to future events in some cases, as well.
The problem with pre-trib is the lack of scripture that actually teaches it? Where is it actually in the Bible? You get all these people who accept the pre-trib argument, and then start arguing grammatical issues like you are, or arguing off of weak loose reasoning (E.g. not appointed unto wrath, etc.), but there is no narrative or direct statement that teaches a pre-trib rapture, and if we follow the narrative and didactic passages, Jesus comes back and the church is raptured at His coming.
So many people are indoctrinated so heavily into pre-trib, that when the preacher's assert the pre-trib scenario, taking a verse or two here and there that does not teach it in context, they believe pre-trib.
Look at the events Paul says happen at the coming of Christ, at the parousia in II Thessalonians 2
1 Now we beseech you, brethren, by the coming of our Lord Jesus Christ, and by our gathering together unto him,
and
8 And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming:
These two verses are in the very same chapter. Now, pre-trib has the judgment of the man of sin, the beast, happening at the end of the tribulation. So to be consistent, they should acknowledge that the Lord's coming happens at the end of the tribulation. IN verse 1, it speaks of our gathering together unto him. He's writing to Thessalonian beleivers in Jesus, many of whom are Gentiles, not the whole nation of Israel. The 'gathering' here is the rapture.
So it makes sense that the rapture happens at the end of the tribulation. This fits with the gathering of the elect occuring at the coming of the Son of Man after the tribulation in Matthew 24.
Why is it that pre-trib arguments are always so loose, like yours above-- like the idea that an announcemnt that the wedding 'is come' in the aorist must means the rapture already happened. Semantically, that's really stretching an argument right there. But pre-trib just doesn't deal with the arguments that contradict it.
When I ask pre-tribbers why the church is here when Jesus comes back in II Thessalonisn 1, and why He is executing vengence on the unbelievers there when He comes to be glorified in the saints, and how they could possibly reconcile that with pre-trib, I've never seen anyone be able to type out a clear cohesive response. But yet they go back to trying to interpret passages that won't fit through the grid of pre-trib, with no evidence for the theory.
If there were some Bible that actually taught pre-trib, I could understand trying to work other passage into the pre-trib mold. But I just don't see those passages at all. Where are they? Why base a whole theology based on loose arguments contrary to what the more direct passages teach in a plain literal way?
and where then Luke 12:36-37,38,40 picks up the next scene in the chronology [where "Parousia" also applies, at the time of His Second Coming to the earth]: "when he will RETURN FROM the wedding..." THEN the meal; Matt25:1-13nasb esp. v.10, Matt22:9-14nasb, etc...)
Again, something loose. Let's look at the passage:
36 And ye yourselves like unto men that wait for their lord, when he will return from the wedding; that when he cometh and knocketh, they may open unto him immediately.
37 Blessed are those servants, whom the lord when he cometh shall find watching: verily I say unto you, that he shall gird himself, and make them to sit down to meat, and will come forth and serve them.
38 And if he shall come in the second watch, or come in the third watch, and find them so, blessed are those servants.
39 And this know, that if the goodman of the house had known what hour the thief would come, he would have watched, and not have suffered his house to be broken through.
This is a description of scenarios where servants might wait for someone to return. Weddings were drawn out situations. They did not have cell phones back then. I would assume normally a land-owner might return to his household some time around sunset to settle in for the evening when it was dark. But weddings might go on and on, so the servants had to be ready. Theives breaking in or stealing stuff around the house at night might have been a big concern, too. Another analogy.
You are arguing doctrine off of something loose here-- insisting the analogy about being prepared at odd hours for a man to come back from a wedding-- actually means the wedding happens first.
How does this make sense? The disciples are the ones doing the waiting. In Matthew 24, the end times conversation is directed toward disciples. So why should be believers who believed in Jesus long before a period that starts 7 years before the second coming have to be ready and waiting for Jesus to come back for them
after the rapture of the church. That just doesn't make sense.