1 In those days John the Baptist came preaching in the wilderness of Judea, 2 “Repent, for the kingdom of heaven is at hand.”  3 For this is he who was spoken of by the prophet Isaiah when he said, “The voice of one crying in the wilderness: ‘Prepare the way of the Lord; make his paths straight.’”  4 Now John wore a garment of camel’s hair and a leather belt around his waist, and his food was locusts and wild honey.
5 Then Jerusalem and all Judea and all the region about the Jordan were going out to him, 6 and they were baptized by him in the river Jordan, confessing their sins.
Matthew 3:1-6 (ESV)