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

Chapter 30 of the Sri Sai Satcharita portrays Sai Baba as the ultimate 'abode of mercy' who is deeply compassionate towards His followers. The text explains that while He is fundamentally formless (Nirguni), He assumes a form with attributes (Saguni) drawn by the power of His devotees' faith. It emphasizes that Sai Nath intimately knows the heart's desires of His devotees and possesses the unique capability to fulfill them, thereby bringing them peace. As this chapter highlights, those who receive His grace attain great power, knowledge, and the dissolution of their sins.