Neveula, Diogenesister has it exactly right. If you die five minutes before Armageddon starts, you get a free pass into Paradise. Die a second after it begins, sorry, you're out of luck. Sick, twisted, and wrong-headed, but that's what they believe.
And Witnesses never 'befriend' non-JWs without an ulterior motive: to convert you. If you refuse to convert, they drop you like a piece of garbage and move on to someone else. Once you're in, they may still drop you because there's now no incentive to keep being nice to you; you're already hooked and they're on to someone else to convert.