How does Chapter 32 emphasize the importance of a Guru over scriptural knowledge?

Chapter 32 strongly asserts the supremacy of a Guru's grace for attaining true knowledge. The text makes a powerful statement that even if a person has thoroughly studied the Vedas, Vedangas, and other Shastras, all this learning is considered "mere chaff" without the grace of a Guru. It further elevates the Guru by stating that the words from Sai Baba's own mouth have the power to destroy sins and afflictions, much like the sight of the Ganga river, and that his words can cause a devotee to see their own Guru. This highlights that direct guidance from a Guru is indispensable for spiritual progress, as per the teachings in Chapter 32.