William Lane Craig offered the following observation in response to a Christian who had been shaken in his faith from reading books by atheists and listening to Richard Dawkins ...
I find myself utterly baffled by the cavalier way in which many ill-equipped Christians expose themselves to material which is potentially destructive to them. It’s like someone who doesn’t know how to swim deciding to take the plunge in the heavy surf. Wouldn’t it be the sensible thing to do to first prepare yourself before venturing into dangerous waters?
Just because one may have been playing with pretend-swords in the backyard, does not mean he is prepared to take on the 3 Musketeers. While new Christians certainly have no business engaging such powerful foes of the faith, even a long-time Christian who has never bothered to educate himself is not "prepared to make a defense to anyone who asks you for a reason for the hope that is in you" (1 Pet 3:15). While there is a place and time to engage potent enemies of the Faith, it must be done by those that are properly prepared and equipped, not by recruits still in Basic Training.
A Christian who does not have a solid grasp of Trinitarian theology based on Scriptural revelation, has no business discussing it with the Jehovah's Witness who shows up at his front door and who will most likely make minced meat out of him.
If you haven't acquainted yourself with the classical Kalām cosmological argument for the existence of God, or the increasingly powerful Teleological argument (which led Antony Flew, the most notorious atheist in the world for decades to change his mind at the age of 81 and renounce atheism), or the defense for God's existence on the basis and reality of morality and ethics - you're foolish to immerse yourself in the writings of someone like Richard Dawkins.
If you haven't attained a solid grasp on the essential, cardinal doctrines that define who is a true believer, you're insane to read the works of the likes of John Shelby Spong.
It's often asserted that the best defense against counterfeit currency is a thoroughly intimate and detailed knowledge of the real thing. One who has spent considerable time studying genuine currency, learning the intricate nuances of each particular denomination, the kind of ink that is used in printing and even the special paper that is used, eventually reaches the point of knowing by sight, smell, feel and even sound the real thing and will not be easily fooled by the counterfeit. As Craig points out to those foolish enough engage the enemy unprepared,
Do we forget that there is an enemy of our souls who hates us intensely, is bent on our destruction, and will use anything he can to undermine our faith or render us ineffective in God’s hands? Are we so naïve?
The New Testament often uses military metaphors to describe the Christian with good reason. We are engaged in a cosmic war with an unseen enemy who is a master of deception and does not hesitate to use devastating weapons of mass destruction.
Finally, be strong in the Lord and in the strength of his power. Put on the whole armour of God, so that you may be able to stand against the wiles of the devil. For our struggle is not against enemies of blood and flesh, but against the rulers, against the authorities, against the cosmic powers of this present darkness, against the spiritual forces of evil in the heavenly places. Therefore take up the whole armour of God, so that you may be able to withstand on that evil day, and having done everything, to stand firm. Stand therefore, and fasten the belt of truth around your waist, and put on the breastplate of righteousness. As shoes for your feet put on whatever will make you ready to proclaim the gospel of peace. With all of these, take the shield of faith, with which you will be able to quench all the flaming arrows of the evil one. Take the helmet of salvation, and the sword of the Spirit, which is the word of God. [Eph 6.10-17]
Sadly far too many Christians take lightly the war in which we are all engaged (whether we realize it or not) and while dressed as for a Sunday afternoon barbeque, suddenly and unexpectedly find themselves in the confusion of combat on the receiving end of powerfully destructive weapons.
Craig is correct that all Christians "are called to be disciples, which in the Greek means “learners.” " He penetratingly asks those who ignorantly stumble onto the battlefield ill-prepared,
"Is what you’re doing your idea of what Christian discipleship looks like? Is this the path to transformation by “the renewal of the mind” (Romans 12.1-2)?"
Amen. If you doubt the seriousness and ferocity of the war we are engaged in, watch this video in entirety.