We all think of John the Baptist as a giant of the faith, and he certainly played a huge part in the Christian faith. He was the first son of a woman that was too old to have babies without divine intervention. He was the first mere human outside of Mary, and maybe Joseph to recognize Jesus divinity by actually jumping for joy in his mother’s womb when Mary spoke. Luke 1:39-44
He preached the coming of Jesus as was prophesied Matthew 3 :1-3
He witnessed a divine sight when he baptized Jesus. Matthew 3:16-17
And he even challenged the morality of the King! Mark 6: 17-18. Which is something that no one who values their life did in those days, but John did what God told him to do!
One can only imagine what it was like being sentenced to an ancient Roman jail, if he didn’t already know that he was going to die in there he strongly suspected it. The suffering in there must have been terrible for him to start questioning what he already knew in his heart and through the evidence of the divine that he had already seen, but in Matthew 11:2-3 We see that John sent his disciples to question Jesus. John wanted to know if Jesus was the one to come, or should they expect someone else. He had, at least for the moment doubted. Jesus then responds by giving him evidence “Go and report to John what you hear and see, the blind see, the lame walk, those with skin diseases are healed, the deaf hear, the dead are raised, and the poor are told the good news. And if anyone is not offended because of Me, he is blessed.”
Jesus did not tell John how doomed that he was because of his lack of faith, he gave him evidence, and said that the offence he was enduring now would end in a blessing! And he actually bragged on him to the people who were listening to him!
I think that if we are honest with our self everyone has doubts from time to time, natural disasters, the death of a child, our own terrible sickness, and other horrors this Earth can, and does provide shake us to our core. If John the Baptist could face doubt , everyone can, but God is not afraid of our questions. There is evidence all around us for everyone who is willing to see it. God will not be offended if you look for it, and that evidence can hold you up, when the world is trying to knock you down!