(4:13) "Others ... have no hope."
Christians shouldn't mourn the death of their fellow believers. They'll be OK; you'll see them later in heaven. The people you should
mourn are dead nonbelievers. They have no hope (because they're going to hell).
(4:15) "We which are alive and remain unto the coming of the Lord shall not prevent them which are asleep."
1 Thessalonians was one of the first Christian writings, yet already (ca.50 CE) believers were getting impatient about Jesus' supposed return. Their fellow believers were dying and yet Jesus still hadn't come. What the
hell is taking him? And what happens to dead believers? Will they get to see Jesus return? Paul had a lot of 'splainin to do.
(4:16 -- Jehovah's Witnesses) "For the Lord himself shall descend from heaven with a shout, with the
voice of the archangel."
From this verse and Jude 9, the Jehovah's Witnesses figure
that Jesus is really the archangel Michael.
(4:16) "The trump of God"
But the JWs are wrong about that. Donald Trump is the trump of God -- or so says WND, anyway.
Donald Trump is God's final warning to America.
For ye know what commandments we gave you by the Lord Jesus. For this is the will of God, even your sanctification ... That every one of you should know how to possess his vessel in sanctification and honour;
Not in the lust of concupiscence, even as the Gentiles which know not God. 4:2-5
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. 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: 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. 4:15-17
Comfort one another with these words [in the previous three verses]. 4:18