Question: I’ve heard you say that after the Rapture everyone on earth will be united. To do what?
Response: They will be united, first of all, in a world religion and they will worship both Satan and the Antichrist [1]. Scripture teaches that everyone (except those who believe the gospel and reject Antichrist [1] and as a result are executed for their faith) will worship “the dragon...and...the beast…” (Rv 13:2-4).
Secondly, the world will be united in a world government under Antichrist [1]. He is given power “over all kindreds, and tongues, and nations” (v. 7) so that “all, both small and great, rich and poor, free and bond, [must] receive a mark in their right hand, or in their foreheads: And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name” (Rv 13:16-17).
They will also be united in the “strong delusion” with which the Lord will afflict those who “believed not the truth, but had pleasure in unrighteousness” (2 Thes:2:11-12 [11] And for this cause God shall send them strong delusion, that they should believe a lie:
[12] That they all might be damned who believed not the truth, but had pleasure in unrighteousness.
See All... [2]). Clearly, mankind will unite under Antichrist [1] to do his will, to pursue evil desires, and to oppose the true God.
Links:
[1] https://www.thebereancall.org/taxonomy/term/2/antichrist
[2] https://www.thebereancall.org/bible/1/2TS/2/11-12#v11