"Be on guard for Satan’s deceptions. Never lose sight of the fact that you are involved in a spiritual warfare and that there is an enemy of your soul who hates you intensely, whose goal is your destruction, and who will stop at nothing to destroy you. Which leads me to ask: why are you reading those infidel websites anyway, when you know how destructive they are to your faith? These sites are literally pornographic (evil writing) and so ought in general to be shunned. Sure, somebody has to read them and refute them; but why does it have to be you? Let somebody else, who can handle it, do it. Remember: Doubt is not just a matter of academic debate or disinterested intellectual discussion; it involves a battle for your very soul, and if Satan can use doubt to immobilize you or destroy you, then he will."
— William Lane Craig, "Q&A #29: Faith and Doubt" from http://www.reasonablefaith.org/faith-and-doubt