ANSWER: (1) He did not doubt that Jesus was a prophet and a miracle-worker, but because he did not put on the crown, mount the throne and sway his kingly scepter for the deliverance of his forerunner from Herod's underground prison, he began to doubt that Jeans was the long-expected Messiah, the anointed King. He was shut up in darkness, which always tends to produce mental depression or the blues, such as his prototype Elijah had under the juniper tree after his long race to escape the threat of an angry queen (I Kings 19:4). John's faith in King Jesus suffered a partial eclipse, at whom he was in danger of being offended or stumbling. Hence the question, "Art then he that should come, or do we look for another?" (2) He was an Old Testament saint and accepted of God. though not technically in Christ's kingdom, which was not opened till Pentecost. He doubted the kingship of Christ and had in his mind the erroneous conception of a worldly kingdom. He failed to realize the spiritual nature of the Messiah's kingdom, known and enjoyed by the smallest real Christian. (3) The common interpretation that "the violent" are zealous Christians who conquer and win heaven by force of arms, I cannot adjust to the context, which is a description of John. Jesus rather apologizes for him, intimating that his mistake is an error of many, during the whole time of John's ministry, who had been clamoring impatiently for Christ to assume the scepter. The people together with John wished to hurry up the earthly reign of Christ, violently. They would take it by storm. This is the only exegesis that is in harmony with the context.
— Steele's Answers pp. 143-145.