What does Chapter 32 teach about the necessity of a Guru for gaining knowledge?

Chapter 32 places supreme importance on the role of the Guru for spiritual attainment. It makes a powerful statement that even if one has studied the Vedas, Vedangas, and other scriptures, true knowledge is impossible to gain without the Guru's grace. All such learning without divine grace is dismissed as 'mere chaff.' The chapter emphasizes that the words from Maharaj Sai's mouth are so potent they can cause a listener to see their own Guru, reinforcing the idea that the Guru is the only way to navigate the sorrow-filled tree of worldly existence.