Tells the story of Jesus' life, teachings, death, and resurrection, emphasizing fulfillment of Old Testament prophecies and connecting Him as the Messiah.
For John came unto you in the way of righteousness, and ye believed him not: but the publicans and the harlots believed him: and ye, when ye had seen it, repented not afterward, that ye might believe him.
John taught righteousness, but you didn't believe him. Publicans and prostitutes did. Even after seeing this, you still didn't change your mind to believe him.