Based on this chapter, how is Sai Baba's divine nature and relationship with his followers explained?

Chapter 20 explains that Sai Baba is "originally formless" but graciously took on a physical form for the sake of his devotees, comparing this to an actor playing a role. Shirdi is described as a "Siddhashram" (abode of the perfected), where just the sight of Sai relieves the fatigue of worldly life and drives away delusion. His boundless love is highlighted in the detailed description of him distributing Udi. The introductory verses of Chapter 20 further portray him as the Satguru who provides a refuge for all and possesses the power to end the cycle of rebirths, offering his devotees "eternal rest."