How does Chapter 4 contrast the purpose of a saint's incarnation with their inherent nature, and how is Sai Baba positioned in this context?

Chapter 4 presents a fascinating contrast. It states that saints are 'naturally liberated' beings, yet they choose to incarnate. Their purpose is not for themselves, as they have 'no self-interest,' but is 'purely for the sake of others'—to uplift the distressed and re-establish religion. The chapter then elevates this concept by positioning Sai Baba as the 'Supreme Divinity' and 'Supreme God.' While a saint's mission is to build a 'temple of Ultimate Truth,' Sai is described as the Truth itself—eternal, non-dual, and beyond description, so much so that the Vedas could only refer to Him as 'Neti-Neti' (Not this, Not this). This positions Sai not just as a saint fulfilling a mission, but as the divine source of that mission.