St. John the Baptist, thought of as a man of the wilderness clothed in camels hair, is really a prophet, a teacher and a critic of worldly society calling for a change in the religious life.
In the New Testament St. John the Baptist is called a teacher "Then tax collectors also came to be baptized, and said to him, 'Teacher, what shall we do?'"(Lk 3:12). In Aramaic and Hebrew, he was called a "rabbi" (Jn 3:26).
St. John's main teaching was about the way of God and righteousness. He is said to have come "in the way of righteousness" (Mt 21:32). To walk about the way of God and righteousness meant complete obedience to all aspects of the Law, both in one's heart and actions. He proclaimed a message of crucial significance to his people. The importance of the message was introduced in the Holy Gospels by the words "preached", "cried" and "witnessed". St John the Baptist was well heard. "All the country of Judea and all the people of Jerusalem went out to him" (Mk 1:5).