How does Chapter 42 describe the transformative power of a devotee's faith in the Sadguru?

Chapter 42 eloquently describes the profound impact of a devotee's faith. It posits that by the light of the Guru's grace, the distress and fear of worldly existence are completely removed, and the door to ultimate liberation opens. The chapter makes a powerful assertion that by constantly remembering the Sadguru's feet, the very nature of obstacles dissolves. It goes so far as to say that through this remembrance, "even death shall meet its death, and the sorrows of worldly life are forgotten." Sai is presented as a 'Wish-fulfilling Tree' for his devotees, underscoring that unwavering faith in the Guru is the key to transforming unhappiness into happiness and attaining great holiness.