Expecting a man with the following viewpoint to come to a rational conclusion when the tenets of his religion are contradicted by evidence is a fools errand:
Now there is a danger in all this so far. Some persons might say that we should never seek to defend the faith. Just preach the gospel and let the Holy Spirit work! But this attitude is unbalanced and unscriptural, as we shall see in a moment. For now, let us just note in passing that as long as reason is a minister of the Christian faith, Christians should employ it.
Some people disagree with what I’ve said about the role of argument and evidence. They would say that reason can be used in a magisterial role, at least by the unbeliever. They ask how else we could determine which is true, the Bible, the Koran, or the Baghavad-Gita, unless we use argument and evidence to judge them? Now I’ve already answered that question: The Holy Spirit teaches us directly which teaching is really from God. But let me suggest two other reasons I think those who support the magisterial role of reason are wrong.
First, such a role would consign most believers to irrationalism. The vast majority of the human race have neither the time, training, nor resources to develop a full-blown Christian apologetic as the basis of their faith. Even the proponents of the magisterial use of reason at one time in the course of their education presumably lacked such an apologetic. Otherwise, they would be believing for insufficient reasons. I once asked a fellow seminary student, “How do you know Christianity is true?” He replied, “I really don’t know.” Does that mean he should give up Christianity until he finds rational arguments to ground his Faith? Of course not! He knew Christianity was true because he knew Jesus, regardless of rational arguments. The fact is that can know the truth whether we have rational arguments or not.
Second, if the magisterial role of reason were valid, then a person who had been given poor arguments for Christianity would have a just excuse before God for not believing in him. Suppose someone had been told to believe in God because of an invalid argument. Could he stand before God on the judgment day and say, God, those Christians only gave me a lousy argument for believing in you. That’s why I didn’t believe"? Of course not! The bible says all men are without excuse. Even those who are given no good reason to believe, and many persuasive reasons to disbelieve have no excuse, because the ultimate reason they do not believe is that they have deliberately rejected God’s Holy Spirit.
From Reasonable Faith: Christian Truth and Apologetics, William Lane Craig, page 37.
As long as reason is a minister of the Christian faith, Christians should employ it. The corollary of that one is obvious. When reason is not a minister of the Christian faith, Christians should stop using it and then do what… be unreasonable?
You should believe in something when you have been given no good reason to, and only many persuasive reaspons to disbelieve? Uhh no, then you really should not believe.
The mindset advocated in that book is nothing short of insane.