Why does the author of the Sai Satcharitra say that Sai's greatness is 'inexpressible' in Chapter 49?

In Chapter 49, the author, Hemadpant, describes Sai Baba's greatness as inexpressible due to the profound limitations of human language. He notes that even the sacred Vedas and Puranas grew weary trying to praise the Sadguru, suggesting silence is the real praise. The text explores the concept that Sai's divine play, or 'Leela,' is beyond description. It mentions different stages of speech—Para (transcendental), Pashyanti, and Madhyama—which all fall silent before the Unfathomable, making the fourth stage, Vaikhari (the spoken word), completely inadequate for capturing the true essence of the Sadguru.