This document discusses the story of Jesus healing a boy with a demon from Matthew 17:14-20. It says the disciples asked Jesus why they could not cast out the demon, and Jesus replied it was because of their little faith. The document then examines three kinds of faith: demonic faith, dead faith, and dynamic faith. It encourages having a dynamic faith, which is sensitive to others' needs, actively serves others, and has no doubts. It urges readers to evaluate what kind of faith they have and strive to develop a dynamic faith through God's help and grace.