I believe the resurrection happens at the end of the 7 years period.
The Bible says the saints are given in to the beast's hands for three and one half years, and when he has accomplished to scatter the power of the holy people then all things are finished.
And the Gospel must be preached in to all the world as a witness to the nations and then the end shall come.
Which then comes the end when the Son shall deliver up the kingdom to the Father, so the resurrection has to happen at the end of the 7 years period, for that is when it is the end and the kingdom delivered up to the Father.
Jesus said that when the resurrection happens the hypocrites will not be caught up with Him, and they will not have eternal life, and once He shuts the door no Gentile can receive salvation.
So if it is pre-trib resurrection then no Gentile could be saved after that so there would be no tribulation Gentile saints.
Also it if it pre-trib then the Gospel has been preached in to all the world, so there can be no tribulation Gentile saints for they were either hypocritical, or rejected the truth.
And God's wrath is not in the 7 years period, for the first three and one half years repentance and salvation is still available to the world, so the wrath of God will not be poured out on the world, and the saints will remain on earth as a witness to the world, and have not been resurrected yet.
And the beast has power to rule for the last three and one half years, and has power over all nations, kindreds ,and tongues, and no nation or kingdom can rule unless God allows it, so if God is giving the beast power to rule He will not pour out His wrath on the world.
The wrath of God is after the 7 years period, for God is giving the world their way for 7 years, and the seals are for a long period of time that started before the 7 years period and not the wrath of God, and the trumpets are not the wrath of God, but warnings to repent and turn to God, but after the 6th trumpet they do not turn to God, so He gives them the man of sin to rule over them.
The wrath of God is after the 7 years period leading up to the battle of Armageddon, which the world will attack Israel after the 7 years period, and then God will come back with all the saints, not some of the saints, but all the saints, so if they say there is a pre-trib resurrection and they will come back to unite with tribulation saints, then why is all the saints with God.
Also the beast blasphemes against God, and His tabernacle, which he would not have to do unless the saints are on earth, which Israel as a nation has not been turned to the truth yet, for they are blinded in part until salvation is no longer available to the Gentiles when they take the mark of the beast, and Israel is protected for the 7 years period from physical attack.
So this is addressed to the saints in all the nations, and the beast makes war against the saints in all the nations.
Which all the Jews are in Israel, and not in the nations, for when the man of sin establishes peace in the Middle East it will pave the way for all Jews to go to Israel, which God said He will bring the whole house of Israel back to Israel, and leave none of them in the nations anymore, and they shall know the LORD their God from that day forward, and He will not hide His face from them anymore.
The beast will make war against all the saints in all nations, and all the Jews are in the nation of Israel, but if it is a pre-trib resurrection there would not be any Gentile saints on earth during the 7 years period, and if that is the case the beast would not have to deceive the Gentiles, for they could not have salvation, but the beast deceives all people on earth that do not love God.
But if it is pre-trib there is no Gentile saints on earth during the 7 years period.
Also Paul said let no person deceive by any means, not by letter, and not by word, for the gathering of the saints will not happen until there is a falling away first which happens at the end of the first three and one half years, and the man of sin claims to be God at the middle of the 7 years period.
But then the beast makes war against the saints for three and one half years which is saints in all the nations.
But if it is pre-trib there is no Gentile saints on earth during the 7 years period.
Also Paul said when the nations come together and say Peace and safety the saints will not be deceived by that, which when the man of sin establishes peace in the Middle East, which is an obstacle to the coming together of the nations, and the nations come together, that is when the 7 years period will begin.
So the saints are on earth when the 7 years period begins, and Paul was addressing all people who confess Christ.
And Jesus said He will deliver those in the truth from the temptation that shall come upon the whole world to try all them that dwell on earth, which there can only be one temptation that can come upon all people at the same time, and that is when the world says Peace and safety, for will they be with God, or follow the world.
So the saints are on earth when the nations come together and say Peace and safety, so the saints are on earth when the 7 years period starts.
There is no pre-trib resurrection for then there would be no Gentile saints on earth during the 7 years period, but there are Gentile saints on earth during the 7 years period.
And repentance and salvation is available to the world for the first three and one half years, so the saints will remain on earth, and the wrath of God is not poured out on the world.
And the beast makes war against all saints in all nations for three and one half years, but if it is pre-trib there would not be any Gentile nations on earth, and the beast has power to rule, so the wrath of God is not poured out on the world.
The resurrection will happen at the end of the 7 years period, which after the beast scatters the power of the holy people for the last three and one half years, then all things are finished, and then comes the end when the Son shall deliver up the kingdom to the Father, when He shall put down all rule, authority, and power, but before the 7 years period starts Jesus did not put down the world for they still have more than 7 years to rule.
Paul said do not let any person deceive you by any means, even on this website.