The important thing to remember is that the church is not appointed to suffer God's wrath, which will be in operation during that last seven years, from the time that the first seal is opened and the Lamb/Christ is the One opening them.
The wrath of God is not in the 7 years period,for God is allowing the world 7 years to have their way,and cause all people that do not love Him to take the mark of the beast,and then He can put an end to this sin business on earth,and if He is allowing the world to have their way,then He will not go against them until the 7 years period is over.
The saints cannot be gathered unto Christ until there is a falling away first,and the man of sin claims to be God.
The tribulation is for the saints,not the world.
The man of sin will establish peace in the Middle East,and all Jews will come out of the nations,and go back to Israel,which God said He will leave none of the Jews in the nations,but bring the whole house of Israel back to their land,and the Gentiles will come together,and say,Peace and safety,and the 7 years period will begin,and peace in the Middle East,and all Jews going back to Israel,will separate the Jews from the Gentiles,and will start to separate the people that love God,from the people that do not love God.
The Jews will rebuild their temple without hassle from the Palestinians.
During the first three and one half years,repentance,and salvation,is still available to the world,so the saints will remain on earth,as witness to the truth.
Unified religious system based on spiritual evolution,and religions not compatible interpreted as such,and the ten horn kingdom,the world split in to ten sections with a leader in each section.
The time they will not endure the truth of the Bible,but according to their own lusts,spiritual evolution through nature,and a hate crime to try to convert someone to their religion,punishable in the international criminal court system,for all are vaild with a core truth,and Christianity will rapidly decline in impacting the world with the truth.
Unified religious systen offends the religion of Islam,the 6th trumpet,for they will say it is an insult to Allah,and do not accept the unified religious system's interpretation of Islam,and are against them trying to stop them from spreading Islam,and Islam and the world clash,and nuclear weapons are used to devastate the Islam nations,which the man of sin will pluck up 3 horns by ther roots.
That war is so terrible that the world is in despair,and lost hope,and they turn to the man of sin for the solution,and do not repent of their sins,and turn to God,but keep trying to achieve peace on earth by their own efforts,so He gives the world the man of sin to deceive all who do not love Him.
The falling away first is complete.
The man of sin steps in to the Jews temple,and claims to be God and their Messiah,and addresses the world that he harnessed the power of nature,and obtained power,and the world says,who is like unto the beast,and who can make war with him,believing he can establish his kingdom,and no foe can stop him,and the deadly wound was healed,and the world had hope for peace on earth.
When the world takes the mark of the beast,repentance,and salvation,is no longer available,and the saints can be gathered unto Christ.
The beast has power to rule for three and one half years,which he can only have this power because God is allowing him to rule,so God will not go against the beast until the three and one half years is over.
The beast makes war against the saints,and prevails against them,and they are given in to his hands for three and one half years,and he shall destroy the mighty and holy people,and when he scatters the power of the saints then the saints that remain on earth shall be gathered unto Christ.
Then the wrath of God is poured upon the world leading up to the battle of Armageddon,when the world attacks Jerusalem,the Jews.
Jesus said the Jews will not see Him again until they say blessed is He that comes in the name of the Lord,which during the last three and one half years God turned the nation of Israel to the truth that Jesus is their Messiah by way of 2 witnesses.
The wrath of God is not in the 7 years period,for God is allowing the world 7 years to have their way,so He will not go against them until the 7 years period is over,and the tribulation is for the saints.
There is only 2 resurrections,one after the tribulation,before the millennial reign of Christ,and one after the millennial reign of Christ.
The saints will be on earth when the 7 years period begins.
When the world says Peace and safety,the Gentiles will come together and try to establish peace on earth,but it is not the operation of God,and it will lead to the beast kingdom.When they say Peace and safety it will begin the 7 years period.
Jesus said He will deliver the elect from the temptation that shall come upon the whole world,to try them that dwell upon the earth,and Paul said the saints will not be deceived by that day for they will know is is not of God.
So the saints are on earth when the 7 years begins,and they are the elect,and Jesus delivered them from that temptation,so it is not like the saints in the truth get caught up before the 7 years period,and then some come to the truth later on,and are caught up.
Because the elect are on earth when the 7 years period begins,so there is no resurrection before the 7 years period.
Repentance,and salvation,are available to the world for the first three and one half years,so the saints will remain on earth,so there is no resurrection at that time.
When the world takes the mark of the beast,repentance,and salvation,are no longer available to the world,but God allows the beast to persecute the saints for thr last three and one half years,and then the resurrection.
So the first resurrection does not happen until the 7 years period is over.