In imitation of Jesus, the teacher must teach, not for her own glory in order to advance her career or to gain acceptance or to win approval, but for the glory of God and for the benefit of her students.
Those who attended the synagogue at Capernaum were used to hearing the scribes preach. However, the scribes focused on legalism, on external observances and on teaching man-made traditions. They did not seek the needy out as Jesus did, to love, heal and teach them.
Jesus spoke in a way that his audience had never heard before.