1 Thessalonians 4:
14 For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him. 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. 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: 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.
14 For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him. 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. 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: 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.
verse 14: God brings with [G4862] Him the souls of the dead in Christ - to be "reunited" with their resurrected bodies.
Whilst the "caught up together" part speaks of "our Rapture [IN THE AIR]" (to the meeting of the Lord IN THE AIR--at a specific point in time)... the line talking about "shall God bring WITH [G4862] Him" is talking about His "RETURN" to the earth (later point in time), which is just making the point that THEY (the DEAD in Christ, just because they've died beforehand) will NOT be LEFT OUT of such a thing/event.
G4862 ["with" use in THIS context] refers to "UNIONed-with" / "IDENTIFIED-with" ... and only applies to "the Church WHICH IS HIS BODY" (ALL those saved "in this present age [singular]"--to whom "our Rapture" SOLELY pertains!)...
...whereas another [distinct] "with" word (G3326) refers to, for example, when the "5 [of the 10] VirginS [PLURAL]" will "ACCOMPANY [G3326] Him into the wedding FEAST/SUPPER" (Matt25:10), the earthly MK age, but which does not refer to "UNIONed-with" / "IDENTIFIED-with" as the "with [G4862]" word does, that applies to US / the Church WHICH IS HIS BODY [believers of "this present age [singular]"--i.e. the "BETROTHED / Bride / Wife [SINGULAR]"]
So that one part of the sentence/context is just saying, it is not going to be [true for] ONLY the "STILL-ALIVE" ones (but how "the DEAD in Christ" will ALSO PARTICIPATE in that later thing... here's HOW)