What is the primary message of Chapter 30 regarding Sai Baba's nature and his connection with his followers?

Chapter 30 portrays Sai Baba as the ultimate compassionate being, an "abode of mercy" whose darshan alone can eliminate the fears associated with worldly existence. The chapter explains a profound concept: while Sai is fundamentally formless (Nirguni), it is the power of his devotees' devotion that draws him into a form with attributes (Saguni). It assures followers that Sai Nath is completely aware of their heart's desires and possesses the unique capability to fulfill them. As the chapter states, when Sai bestows his grace, the recipient attains great power and the knowledge to discriminate between Self and non-Self.