What does Sai Baba's encouragement to the author of the Satcharitra reveal about the nature of faith?

In Chapter 3, Sai Baba's interaction with the author, Hemadpant, reveals that faith is a catalyst for divine work. Baba gives his "complete permission" and urges the author to "keep complete faith in my words" and not hesitate. This shows that faith is the primary requirement for undertaking a spiritual task. Baba's assurance that writing the life story will destroy ignorance and that listening to it will generate waves of love provides the foundation for the author's confidence. As a result, the author’s mind becomes "free of doubt." This episode from Chapter 3 demonstrates that faith is not merely a passive belief but an active trust in the Guru's command, which dispels hesitation and empowers the devotee to become an instrument for a higher purpose.