For one who spent all his life as a Muslim, it would be the whispering of satan to be concerned saying something like, "Would I be able to preserve my faith at the moment of death?" There is no need to take that serious. No such thing would happen. I mean a wholehearted, subconscious faith is the basis. Or else something might happen to one's mind, such whisperings have no validity. God would look at one in all his integrity. - Harun Yahya