You are close, but Paul claims the Second Coming happens at the rapture, but that is all; and the Second Coming is not at John's 7th Trumpet. You are going to have to show that in Revelation.
You are correct in that great tribulation, the entire last 1992 years has been while the church has been spreading the Gospel. The last 1992 years has produced the only martyrs found in the book of Revelation. The souls under the alter have come out of this great tribulation. Many of those in Revelation 7:9-17 were martyred over the last 1992 years, but not all the redeemed have been martyred, even though many have also suffered under persecution and troubled times. Sometimes the church has thrived and been blessed. But all the church is already gathered and before that heavenly throne between the 6th and 7th Seal being opened. No more from earth will join that number, after the 7th Seal is opened.
Christ as Prince is already on earth and sitting on that glorious throne in Jerusalem, at that point. The redeemed from that point on are the firstfruits of the 1,000 year reign on earth. These souls are harvested by the angels themselves and start life in the Millennium after the 7th Trumpet stops sounding.
Paul has the archangel with the Trump of God. That may be the Trumpet that makes the last sounding. But it is brought to earth by that archangel at the Second Coming, even before the 7th Seal is opened. There are 6 other Trumpets and 7 Thunders that have to sound before that final role call of who will remain and who will be removed from the Lamb's book of life.
Paul did not include Zechariah 14 in his eschatological statement. Nor could Paul be referring to John's words from the book of Revelation. Revelation was not even written yet.
Paul was writing from the perspective of resurrection and the change from this sin nature flesh, to a flesh without sin. The change from the corruptible to the incorruptible. That was Paul's perspective in both Corinthians and Thessalonians. Paul was not explaining the total ramifications of the Second Coming. So readers should not interpret Zechariah 14 and the book of Revelation by the limitations of Paul's eschatological viewpoint. Even Jesus gave more detail in the OD, than Paul mentioned. Paul was drawing from what was known in the OD. Paul knew that Christ as Prince was coming to earth at a future point in time. Paul attached a resurrection that was physical and a change that was physical that would happen at the Second Coming. That is all Paul did. And people have run with Paul's writings using many private interpretations that Paul never even intended.
If you read Titus 2:13 Paul mentioned God would also appear in all His glory as well as Jesus Christ. Another fact that Paul knew, but left out of the letters to the Corinthians and Thessolinians.
"Looking for that blessed hope, and the glorious appearing of the great God and our Saviour Jesus Christ;"
When the Second Coming happens all spiritual blindness will be removed. Those on earth will see creation as it actually appears and not "through a glass darkly".
This will show that the rapture is at the second coming at the last trumpet the seventh trumpet on the judgement day when the dead are raised.
What happens at the second coming?
Matthew 16:27
27 For the Son of Man is going to come in his Father’s glory with his angels, and then he will reward each person according to what they have done.
Matthew 25:31-33
31 “When the Son of Man comes in his glory, and all the angels with him, he will sit on his glorious throne. 32 All the nations will be gathered before him, and he will separate the people one from another as a shepherd separates the sheep from the goats. 33 He will put the sheep on his right and the goats on his left.
Revelation 22:12-13
12 “Look, I am coming soon! My reward is with me, and I will give to each person according to what they have done. 13 I am the Alpha and the Omega, the First and the Last, the Beginning and the End.
Jesus comes with His angels and judges and rewards
Jesus comes at the last trumpet and judges and rewards
1 Corinthians 15:51-55
51 Listen, I tell you a mystery: We will not all sleep, but we will all be changed— 52 in a flash, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed. 53 For the perishable must clothe itself with the imperishable, and the mortal with immortality. 54 When the perishable has been clothed with the imperishable, and the mortal with immortality, then the saying that is written will come true: “Death has been swallowed up in victory.”
55 “Where, O death, is your victory?
Where, O death, is your sting?”
Revelation 11:15-18
15 The seventh angel sounded his trumpet, and there were loud voices in heaven, which said:
“The kingdom of the world has become
the kingdom of our Lord and of his Messiah,
and he will reign for ever and ever.”
16 And the twenty-four elders, who were seated on their thrones before God, fell on their faces and worshiped God,17 saying:
“We give thanks to you, Lord God Almighty,
the One who is and who was,
because you have taken your great power
and have begun to reign.
18 The nations were angry,
and your wrath has come.
The time has come for judging the dead,
and for rewarding your servants the prophets
and your people who revere your name,
both great and small—
and for destroying those who destroy the earth.”
1 Thessalonians 4:13-18
13 Brothers and sisters, we do not want you to be uninformed about those who sleep in death, so that you do not grieve like the rest of mankind, who have no hope. 14 For we believe that Jesus died and rose again, and so we believe that God will bring with Jesus those who have fallen asleep in him. 15 According to the Lord’s word, we tell you that we who are still alive, who are left until the coming of the Lord, will certainly not precede those who have fallen asleep. 16 For the Lord himself will come down from heaven, with a loud command, with the voice of the archangel and with the trumpet call of God, and the dead in Christ will rise first. 17 After that, we who are still alive and are left will be caught up together with them in the clouds to meet the Lord in the air. And so we will be with the Lord forever. 18 Therefore encourage one another with these words.
