What does the Bible say about John the Baptist's doubts?

Even a great prophet like John the Baptist, who was filled with the Holy Spirit from his mother's womb, experienced doubt while in prison. In Luke 7:19, he sent two of his disciples to Jesus asking, 'Art thou he that should come, or look we for another?' This question arises not because he lacked prior revelation, but because, like all believers, he wrestled with the persistent presence of unbelief. John's faith was genuine, yet his human condition led him to seek reassurance from the very One he had previously heralded as the Messiah. This highlights the universal struggle of faith in the face of difficult circumstances.