What does Chapter 32 say about the importance of a Guru's grace compared to scriptural knowledge?

Chapter 32 makes a very strong case for the supremacy of a Guru's grace over all other forms of learning. The text explicitly states that even if a person has exhaustively studied the Vedas, Vedangas, Shrutis, and Shastras, this knowledge is considered "mere chaff" without the grace of a Guru. As the chapter highlights, the words from Sai's own mouth are powerful enough to destroy sins and afflictions and, most importantly, help a devotee see their own Guru. This emphasizes the core teaching in Chapter 32 that true, liberating knowledge is impossible to attain without the Guru's blessing.