How does Chapter 49 use the different stages of speech (Para, Pashyanti, Madhyama, Vaikhari) to describe the nature of Sai Baba?

Chapter 49 employs the Vedic concept of the four stages of speech to illustrate the inexpressible and transcendental nature of the Sadguru. The author states that even Para, the highest or transcendental form of speech, "returns" unable to describe Sai's greatness. He continues that the subsequent stages, Pashyanti and Madhyama, also fail to capture His essence. This leads to the rhetorical question of what the fourth and most gross form of speech, Vaikhari (the spoken word), could possibly accomplish. This framework is used to powerfully convey that the Sadguru's true form is inconceivable and beyond the limits of human thought and language.