How does Chapter 4 describe Sai Baba's identity as the Supreme Divinity, and what are the limits of language in expressing this truth?

Chapter 4 elevates Sai to the status of the Supreme Divinity, identifying Him as the Inner Self and the Supreme God who brings joy to the whole world. The text equates Him with the Guru and the Joy-giving Shankar, describing Him as eternal, non-dual, and beyond all limitations of place, time, or object. A key point made in this chapter is the inadequacy of human language to fully describe Him. It states that the four levels of speech—Para, Pashyanti, Madhyama, and Vaikhari—get tired of describing Him. Even the Vedas, in their attempt, ultimately resorted to saying "Not this, Not this" (Neti-Neti), acknowledging that the divine is beyond complete description.