The argument that some people make is God would not let the saints go through the tribulation for He loves them, and would not want them to go through that.
But that does not hold up on that saying alone, for if a person bases it on that then God would of not allowed any saint to ever be persecuted throughout the whole history of the Church, which we know they have been persecuted, and the Bible says all who live godly will suffer persecution, and they are counted as sheep for the slaughter, and killed all the day long.
And who do they think the tribulation is for, but it is for the saints, and the world would not go through tribulation, but wrath after the resurrection of the saints.
Also the Bible says there is only 2 resurrections, one of the saints before the millennial reign, and one after the millennial reign, which blessed is he that has part in the first resurrection, for the second resurrection has no hold on them.
But the Bible says there are saints during the whole 7 years period, so where did they come from.
There is no tribulation saints after the resurrection of the saints, for whoever missed that will have to go to the second resurrection 1000 years later, so if the resurrection happens before the 7 years period begins, then all people left will have to go to the second resurrection.
Also Jesus said whoever does not make it in the resurrection will have their portion with the hypocrites, there will be weeping and gnashing of teeth, and once the resurrection happens, and He shuts the door no person can enter after that.
The Jews will be saved on earth, for all Israel will be saved, but Israel as a nation has not been turned to Jesus during the first three and one half years, and the whole nation does not turn to Jesus until the end of the 7 years period, although many will turn to Jesus before that during the last three and one half years.
And also Israel is protected for the 7 years period from physical attack(Revelation 12).
God is love and loves all people, and will not give up on the world until the world gives up on Him, so He is giving the world 7 years to have their way, and cause all people that do not love Him to follow the beast kingdom, and then He will put them down.
During the first three and one half years repentance, and salvation, are still available to the world, so the saints will remain on earth to represent the truth, and Israel as a nation has not been turned to Jesus yet, so it is not them that will be the witness.
As long as the world can repent of their sins, and be saved, the resurrection shall not happen, which during the first three and one half years repentance, and salvation, is still available to the world, so the saints will remain on earth.
The 6 trumpets are 6 warnings to the world to get right with God, for He is giving the world a chance for the first three and one half years to get right with Him.
After the 6th trumpet, Islam against the world, the world will not repent of their sins, and turn to God, so He gives them the man of sin to rule over them, and he will deceive all people that do not love Him.
An example is WW1, set up League of Nations, did not turn to God, WW2, set up United Nations, did not turn to God, and that pattern will continue until WW3, Islam against the world, which the world turns to the man of sin as the solution to have peace on earth, and did not turn to God, so God gives the world the man of sin to rule over them.
Which the transgressors are come to the full, and when they follow the beast, and take his mark then repentance, and salvation, are no longer available to them, and then the saints will be resurrected, for they do not need to be on earth to represent the truth to the world.
Which is why the Bible says that the saints shall not be gathered unto Christ, until there is a falling away first, which means the condition of the world in response to the Gospel, and the truth, which during the first three and one half years they are going by a unified religious system based on evolution, and people can still evolve, as standard religion, and any beliefs taught not compatible will not be tolerated, and a hate crime, which will be the time the world will not endure sound doctrine, but will want to believe the Bible according to their own lusts(2 Timothy 4:2-4), which is the new age movement interpretation of the Bible, based on evolution through nature, and people can still evolve(1 Timothy 4:1-5), which they want the New Age Christ to cause them to evolve to be greater, who will have all the traits of the new age movement, and the man of sin claims to be God to the world, then the saints can be gathered unto Christ.
But then the Bible says the beast shall make war against the saints, and prevail against them at the start of the last three and one half years, but there is no tribulation saints for there is no tribulation saints if the resurrection happened before the 7 years period, and the 2 witnesses just started preaching to Israel to turn them to the truth, so Israel as a nation is not in the truth, and the majority is blinded in part, and Israel is protected for the 7 years period from physical attack.
Also the Bible says that the beast shall wear out the saints, and they shall be given in to his 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 resurrection shall happen.
Which the Bible says then comes the end when the Son shall deliver up the kingdom to the Father, when He has put down the all rule, and authority, and power.
But the antichrist cannot scatter the power of Israel, for they will never be removed for God has a plan for them, and said when He turns Israel to the truth at the last three and one half years that the whole house of Israel will be back on their land, all 12 tribes.
So the power of the holy people that the beast scatters at the last three and one half years has to be the Gentiles that are throughout the world.
And that is because God is love, and loves all people, and will not give up on the world until the world gives up on Him, so He is allowing them to go that far in persecuting the truth, before it is over for the world.
There will be Gentile saints in the tribulation, and they cannot be tribulation saints that got right with God after the resurrection, for there is no Gentile saints after the resurrection, for if they missed the resurrection they have to go to the second resurrection, and they missed the resurrection because they were either hypocritical, or did not abide by the truth, so they have no chance at salvation after the resurrection.
Also the Gospel must be preached in to all the world as a witness to all nations and then the resurrection, so if they missed the resurrection they cannot be saved, for they missed the resurrection because they did not obey the Gospel, so there is no chance to be saved after the resurrection for a Gentile.
Which the resurrection of the saints does not occur until the man of sin claims to be God, so the Gentile saints which are alive will go through the tribulation, which the tribulation applies to them.
1Th 5:1 But of the times and the seasons, brethren, ye have no need that I write unto you.
1Th 5:2 For yourselves know perfectly that the day of the Lord so cometh as a thief in the night.
1Th 5:3 For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape.
1Th 5:4 But ye, brethren, are not in darkness, that that day should overtake you as a thief.
1Th 5:5 Ye are all the children of light, and the children of the day: we are not of the night, nor of darkness.
1Th 5:6 Therefore let us not sleep, as do others; but let us watch and be sober.
Also Paul said when the nations come together and say Peace and safety the saints will not be deceived by that, but the nations coming together saying Peace and safety is when the 7 years period will start, and the saints are on earth at the start of the 7 years period.
Rev 3:10 Because thou hast kept the word of my patience, I also will keep thee from the hour of temptation, which shall come upon all the world, to try them that dwell upon the earth.
The 7 Churches is how the Church age will go in popular interpretation, although when it is wrong God always has people in the truth.
And Jesus said He will deliver all people that are in the truth from the hour of temptation, which shall come upon all the world, to try them that dwell upon the earth.
But there can only be one temptation that can come upon every single human being at the same time, and that is when the world says Peace and safety, for will you stay with God, get right with God, or follow the world to the beast kingdom.
So the saints are on earth when the 7 years period starts.
There is no pre-trib resurrection.
2Ti 2:15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.
2Ti 2:16 But shun profane and vain babblings: for they will increase unto more ungodliness.
2Ti 2:17 And their word will eat as doth a canker: of whom is Hymenaeus and Philetus;
2Ti 2:18 Who concerning the truth have erred, saying that the resurrection is past already; and overthrow the faith of some.
There is no pre-trib resurrection, and when it does not happen it will overthrow the faith of some, and they will end up following the world, and their interpretation of the Bible, based on spiritual evolution through nature, which the Bible says concerning the new age movement that some shall depart from the faith, and follow them, and is some of the reason because of the pre-trib resurrection, and when it did not happen they said, well it was not true, and the interpretation we was taught was not true, and they end up following the world.