How does Chapter 4 explain the divine nature of Sai and the inadequacy of language to describe Him?

Chapter 4 elevates Sai to the status of Supreme Divinity, equating Him with the Inner Self, the Supreme God, and the Joy-giving Shankar. He is described as eternal, non-dual, and beyond all limitations of place, time, or object. The chapter emphasizes the challenge of describing such a being, noting that the four levels of speech—Para, Pashyanti, Madhyama, and Vaikhari—grow tired in their attempt. Even the Vedas, in their wisdom, ultimately failed to define Him and resorted to the expression 'Neti-Neti,' meaning 'Not this, Not this,' highlighting His transcendental nature.