What is the significance of the Guru's grace as explained in Chapter 32?

According to Chapter 32, the Guru's grace is paramount and indispensable for attaining true knowledge. The text makes a powerful statement that even extensive study of the Vedas, Vedangas, and other Shastras is ultimately useless, described as "mere chaff," without the grace of a Guru. True knowledge is impossible to achieve otherwise. The chapter further highlights that the words from Sadguru Sainath's mouth are so potent they can destroy a listener's sins and afflictions. In fact, listening with a ready mind to the words from Maharaj Sai's mouth is said to be so powerful that it can cause one to see one's own Guru, reinforcing the idea that the Guru's grace is the ultimate path.