For any lover of British humor Monty Python and the Holy Grail is a classic movie. The unique comedy of the film follows King Arthur and his knights as they search for the Holy Grail. As Arthur and his men draw closer to the end of their quest, they come across an old and dangerous footbridge guarded by an old man. In order to cross the bridge the brave knights have to answer three random and ridiculous questions. If they fail to answer correctly or have no answer at all, they fall into the ravine to their death.
This movie is not typically known to cause one to stop and ponder the deeper issues of life. Yet I believe the footbridge scene is a good example of how many people view apologetics and why they are afraid to share their faith.
For years I was afraid to share my faith and the hope that I had in Jesus. I was afraid that I would be asked a question I couldn’t answer correctly or wouldn’t know the answer to at all. I thought that if I didn’t have an answer to the tough questions it might mean my faith wasn’t real. Maybe I’d find out that my faith was blind and irrational. Or I thought that if I couldn’t answer a tough question I would forever hinder that person from knowing the truth. If I had no answer I’d fall into the ravine to the death of my faith and the faith of others.
Over time I have learned that there are answers to the tough questions of life. My faith is not blind. My lack of apologetic knowledge will not thwart God’s salvation purposes. Yet with all the ‘answers’ I have learned, one of the most significant lessons I have gained took me by surprise. To honestly answer a question by saying, “I don’t know,” is refreshingly liberating. Imagine my surprise to discover that there is a great apologetic for the Gospel in not knowing.
To admit there are things I don’t know can create many significant opportunities to share with others what I do know. I may not know the philosophical arguments for how a good God can allow suffering. But I do know that Christ in His goodness suffered on behalf of humanity. When He cried, “My God, my God, why have you forsaken me?” he demonstrated that he knows personally what it means to feel rejected and alone. I do know that in the Bible God has promised to correct every wrong and bring justice to the earth.
“I don’t know” creates a natural invitation to investigate questions with the one asking them. Rather than brushing the inquiry aside I can ask the questioner to search for the answer with me. Not only will this investigation hopefully help answer the seeker’s question, it will also strengthen my faith as I see the reasonableness of what I believe.
To humbly admit I don’t have the answer also demonstrates that my faith is not based solely upon my limited understanding. Though what I believe rests on sound reason, “I don’t know” shows that my faith finds its basis in the personal Triune God. While I will never know the answer to every question life produces I can still have confidence in my faith. This is because it rests upon a relationship with the trustworthy character of God, not my limited knowledge.
C.S. Lewis once said, “I believe in Christianity as I believe that the Sun has risen, not only because I see it, but because by it I see everything else.” You don’t have to know the scientific process of the earth’s rotation to have confidence in the sun’s daily appearance. In the same way, you don’t have to know the answer to every question to have confidence in the person and work of Jesus Christ. When the questions do come, which they inevitably will, you can face them with excitement and confidence. You can use “I don’t know” to know more than you ever thought possible.
 Lewis, C.S. The Weight of Glory: And Other Addresses, Harper One, 2001: p. 140