How does Chapter 41 describe the power of a Guru's grace and its effect on devotees and skeptics?

As explained in Chapter 41, the Guru's grace possesses a transformative power that accomplishes what cannot be attained even by great personal effort. The text suggests that by singing and listening to the Guru's greatness and meditating on His name, the mind becomes pure. The chapter states that the Guru tirelessly looks after the well-being of His devotees when they hold love for Him at their feet. This grace is so potent that it can humble even the proud; the chapter mentions that those who came with false pride to inspect Sai Baba ended up abandoning their egos, returning happy after receiving His Darshan. This illustrates that the Guru's grace can overcome skepticism and bring about profound inner change.