This is a good sermon opener:
In the semantics of the church, doubt has been a negative word. It is rarely used in a favorable way. Faith, not doubt, is the great word of the church. As I stand here every Sunday morning and look into your up-lifted faces, you look so proper, so content, so believing. You seem to be so certain, so full of faith, and so free of doubt.
But, I have a suspicion that the way you look is not the way you are. Beneath the skins of many of you there is planted the seed of honest doubt. Perhaps you do not share these feelings with anyone; but your doubts are there, and they are real. Your worship does not express your doubts, uncertainties, and skepticism. In facing this situation, all of us at times cry out with the man in the Gospel, “Lord, I believe; help thou my unbelief.” This capacity to doubt can often lead to some of life’s most profound questions.
Such was the case with John the Baptizer. His question -“Are you he who is to come, or shall we look for another?”- grew not out of his uncertainty, but out of his doubt. John the Baptizer had heard about the words and deeds of Jesus, but what he had heard did not square with his expectation of the Messiah.
After all, Jesus was born not to royalty, but to a peasant woman. He functioned not as a military ruler, but as a servant. He came not as a judge, but as a forgiving redeemer. He did not bring heavenly condemnation; he brought divine love. He did not associate with the religious establishment, but he went from village to village associating with the rubbish heap of humanity. He spent his time and energy with the least and the lost. He was most concerned with the powerless: the blind and the lame, the lepers and the deaf, and the poor and the out-cast. And Jesus dared to teach that the weak occupied the most important place in the Kingdom of God.
John the Baptizer became confused about the way in which Jesus acted out his messiahship. He had doubts about the validity of his contemporary, Jesus of Nazareth. His skepticism caused him to send one of his buddies to Jesus with the question: “Are you he who is to come, or shall we look for another?” Like others in the New Testament, John the Baptizer was not positive. Oh, to be sure, there were fleeting moments of recognition. Mary thought Jesus was a gardener. Those on the road to Emmaus never did recognize him. Even his closest disciples were not certain if he was or was not the true Messiah.
That John the Baptizer had doubts about the messiahship of Jesus is revealed in his question: “Are you the one who is to come, or shall we look for another?” His question is not clear, either in what is being asked or why. But like all good questions, it shoves the reader into deeper regions of thought.
Joe E. Pennell Jr., From Anticipation to Transfiguration, CSS Publishing Company, 23-24.