I worked at a company that sold business machines. At one point the owner changed the product from one company to another. I watched as salesmen who "knew" their previous product go through the religious transformation to knowing that the product that they were tearing down as inferior the day before, was now the superior product. It took them most of eight hours to change from a set of beliefs they were certain of, to another set of beliefs. This was not even in a church or religious setting, but since their golf club memberships depended on their convictions, their convictions had to be swapped.
In cults the current arguments of their leader are absolute truth, so you need to be able to change what you believe as quick as your leader say something and be ready to change back without noticing when he changes his mind. Note that Krasnov's followers are able to get enraged when someone quotes back what Krasnov said the day before but has now become inconvenient.
All you have to do to find a church member who is a blind follower is ask about when Jesus said, "All of this will come to pass before these people pass away." When you hypothesize that this was probably referring to the First Jewish–Roman War about AD 66. This will break a lot of them. A lot will say they will have to ask their pastor. If they can't look at the words in red and see exactly what is being said, then it is likely that they accept authority over evidence. If you mention that this was written after the Massada and was an easy way to give credit to Jesus for prophecy since the events had already happened, then you will probably move from having a chance to influence them to being recognized as an enemy.
I am a believer, just to put this in context, but I also feel that if you have trouble questioning your beliefs, you don't want the truth, can't handle the truth, and don't have a lot of faith in your beliefs. I don't call myself religious though. That ship has sailed, burned and sunk.
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