"(Jesus words) They are essentially subversive of the established arrangements and ways of thinking. That is clear from the way they first entered the world, their initial effects, and how they are preserved in the New Testament writings and live on in his people. He himself described his words as "spirit and life" (John 6:63) They invade our real world with a reality even more than it is, which explains why human beings then and now have to protect themselves against them."
(Dallas Willard. The Divine Conspiracy)