According to Chapter 32, what is the power of Sai Baba's words and what is the role of a Guru?

In Chapter 32, the words spoken by Sai Baba are depicted as having immense spiritual power. The text describes the stories he tells as being "sweeter than nectar," capable of generating devotion and ending sorrow. His words are compared to the purifying waters of the Ganga that destroy sins and the soothing light of the moon that eases afflictions. Furthermore, the chapter strongly emphasizes the indispensable role of a Guru. It states that even extensive knowledge from studying Vedas and Shastras is worthless, like "mere chaff," without the Guru's grace, as true knowledge is impossible to attain otherwise.