How does Chapter 4 portray Sai Baba's divine nature and relationship to the Supreme God?

In Chapter 4, Sai is identified as the Supreme Divinity itself. The text states that the one who brings joy to the world is the Inner Self, the Supreme God, and that this God is the Guru, who is also the joy-giving Shankar. This divine entity is described as eternal, non-dual, and the object of ultimate love, existing beyond all limitations of place, time, or object. As Chapter 4 explains, this supreme reality is so profound that even the four levels of speech and the Vedas cannot fully describe Him, resorting to the phrase "Not this, Not this" (Neti-Neti) to express His infinite nature.