I don't know how do people still believe in these fairytales, but there seems to be an idea about how the most faithful christ believers can escape the "tribulations" (Read:the upcoming NWO "Rape of man" where you just roll over and die) before they come if they are faithful enough.
Don't delude yourself.
The only people who survive the upcoming mass worldwide Dark Ages are the ones who know how to evade government and survive as the outside rest of the world goes to bloody hell.
It happened in Cambodia that everyone who survived got the fuck out of Cambodia years before the Khmer Rouge took power. It happened in Russia where if you didn't run years before the October Revolution you just die. Do not expect it will be different this time. If you are in ground zero at year zero, Jesus doesn't turn you into a holy paladin. You just die.
I dunno who spread this rapture thing, but whoever spreads it clearly wants the easy way out of the upcoming death and destruction that will engulf the world.
Kind of reminds me of New Age believers waiting for their Aquarius Age. There are differences, but the very basic idea is quite similar. Namely, that there is some chosen in-group that will get special treatment and will end up in The Good Place if they follow some particular doctrine and do the right things this doctrine is telling them to do. For christians it's belief and prayer. For newagers it's positive vibrations, celestial consciousness and other similar stuff.
Reality, of course, is that everyone will get buttfucked if TPTB gets away with what they're planning for us. What actually could help would be to stop waiting for some kind of saviour, realize the actual situation we're in and to plan ahead accordingly. Prepping, withdrawal from the system as much as possible, organizing local communities with like-minded people... Those kinds of things...