How does Chapter 4 portray Sai Baba's identity in relation to the Supreme God?

Chapter 4 of the Shri Sai Satcharitra identifies Sai Baba with the Supreme Divinity itself. The text posits that the one who brings joy to the whole world is the Inner Self and the Supreme God. It explicitly states that He who is God is the Guru, and He is also the Joy-giving Shankar. This divine being is described as eternal, non-dual, the object of ultimate love, and beyond all limitations of place, time, or object. The chapter emphasizes this by noting that even the Vedas could not fully describe Him, resorting to the phrase 'Neti-Neti' or 'Not this, Not this'.