Here is what Apostle Paul taught about Christ's coming to gather His Church according to the KJV Bible...
1 Thess 4:13-17
13 But I would not have you to be ignorant, brethren, concerning them which are asleep, that ye sorrow not, even as others which have no hope.
Paul tells the brethren to don't worry about the brethren that have already died in Christ. He calls those brethren being "asleep", which is a metaphor for the believer having died. (Those in Christ never die really; flesh death only releases our soul to be with The LORD.)
14 For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with Him.
If we believe that Lord Jesus died and was raised from the dead, those also that sleep in Jesus that have died, He will bring with Him when He comes.
How's that going to happen? He will bring them with Him because they are already with Him since they died. Like Apostle Paul taught in 2 Corinthians 5, to be absent from the body is to be present with The LORD. There's two dimensions of existence, this earthly one, and the Heavenly one. We don't have just a flesh body only, we also have a spirit with soul, and that is what goes back to God at death of our flesh body.
15 For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent them which are asleep.
That word "prevent" actually means 'precede' per the Greek manuscript word (Strong's no.5348). Paul simply says that those of us still alive shall in no way precede... the asleep saints to the heavenly; why? Because they are already there, in Paradise. That's why Jesus will bring those with Him when He comes. And that's what the idea of the resurrection on the last day of this world is about.
16 For the Lord Himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
Did you know that resurrection there is a time marker for this event of Christ's coming? It is, and it's about Jesus bringing the asleep saints with Him from Heaven when He comes. That "trump of God" is the same "last trump" Paul taught of in 1 Corinthians 15:50-53 about this event. It means the 7th Trumpet, which is the last trumpet per The Lord's Book of Revelation.
So far, Paul has only given the events of Christ's coming with His DESCENT to earth bringing the asleep resurrected saints with Him. So that is one group of saints Paul covers here.
17 Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.
KJV
This is a second group of saints Paul is covering that are gathered at the same time. These are the saints that are still alive on earth when Jesus comes on that "last trump". Paul taught in 1 Cor.15 that we shall not all asleep, but we all shall be changed, at the twinkling of an eye on the last trump. In that 1 Cor.15 chapter Paul was teaching about the glorious body that manifests at Christ's coming, a "spiritual body". That is what will happen when this "caught up" event happens to the saints still alive on earth, on that day.
Notice that Paul DID... give the timing of Christ's coming with that. When Paul covers the idea of the resurrection there, the raising of the dead, that... is about the resurrection to occur on the LAST DAY of this world (John 6:39-54; John 11:24). And that LAST DAY of this world means the very... last day, which is when God's cup of wrath, the final 7th Vial, will literally end this world by His consuming fire of 2 Peter 3:10.
1 Thess 4:13-17
13 But I would not have you to be ignorant, brethren, concerning them which are asleep, that ye sorrow not, even as others which have no hope.
Paul tells the brethren to don't worry about the brethren that have already died in Christ. He calls those brethren being "asleep", which is a metaphor for the believer having died. (Those in Christ never die really; flesh death only releases our soul to be with The LORD.)
14 For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with Him.
If we believe that Lord Jesus died and was raised from the dead, those also that sleep in Jesus that have died, He will bring with Him when He comes.
How's that going to happen? He will bring them with Him because they are already with Him since they died. Like Apostle Paul taught in 2 Corinthians 5, to be absent from the body is to be present with The LORD. There's two dimensions of existence, this earthly one, and the Heavenly one. We don't have just a flesh body only, we also have a spirit with soul, and that is what goes back to God at death of our flesh body.
15 For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent them which are asleep.
That word "prevent" actually means 'precede' per the Greek manuscript word (Strong's no.5348). Paul simply says that those of us still alive shall in no way precede... the asleep saints to the heavenly; why? Because they are already there, in Paradise. That's why Jesus will bring those with Him when He comes. And that's what the idea of the resurrection on the last day of this world is about.
16 For the Lord Himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
Did you know that resurrection there is a time marker for this event of Christ's coming? It is, and it's about Jesus bringing the asleep saints with Him from Heaven when He comes. That "trump of God" is the same "last trump" Paul taught of in 1 Corinthians 15:50-53 about this event. It means the 7th Trumpet, which is the last trumpet per The Lord's Book of Revelation.
So far, Paul has only given the events of Christ's coming with His DESCENT to earth bringing the asleep resurrected saints with Him. So that is one group of saints Paul covers here.
17 Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.
KJV
This is a second group of saints Paul is covering that are gathered at the same time. These are the saints that are still alive on earth when Jesus comes on that "last trump". Paul taught in 1 Cor.15 that we shall not all asleep, but we all shall be changed, at the twinkling of an eye on the last trump. In that 1 Cor.15 chapter Paul was teaching about the glorious body that manifests at Christ's coming, a "spiritual body". That is what will happen when this "caught up" event happens to the saints still alive on earth, on that day.
Notice that Paul DID... give the timing of Christ's coming with that. When Paul covers the idea of the resurrection there, the raising of the dead, that... is about the resurrection to occur on the LAST DAY of this world (John 6:39-54; John 11:24). And that LAST DAY of this world means the very... last day, which is when God's cup of wrath, the final 7th Vial, will literally end this world by His consuming fire of 2 Peter 3:10.