Reply To: Emunah based on falsehood

My advice would be to not tell your friend that his basis for emunah is false, but instead to try to help him grasp onto a more solid basis for his emunah. Sooner or later he will figure out on his own that his basis for emunah is not reliable, but it will be much better for him if he already has something else to hold onto when that time comes. To tell your friend now before he has a more solid basis for emunah would be like to take the jack out from under the car before you replace the tire.