without antibodies

"A faith without some doubts is like a human body without antibodies in it.  People who blithely go through life too busy or indifferent to ask hard questions about why they believe as they do will find themselves defenseless against either the experience of tragedy or the probing questions of a smart skeptic." 
Tim Keller

'Immediately the father of the child cried out and said, "I believe; help my unbelief!"' Mark 9:24

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