This is the basic fear that the repent-of-your-sins-and-give-money-to-my-church crowd preys on.... as much as a majority of them are honest, and genuinely don't want their infinitely loving god to send you to hell.

I told one once, in venice beach, that if there is a judgement in the afterlife, i'll be sure to make my judgement on his god kinder than his god's on me. He blew up on me -- enough that the cops had to tell him to calm down, which as one of said cops explained, is unusual because street preachers there get a lot of training on what's borderline acceptable legally.

At least that one was sincere in his beliefs, I guess!