Describe the nature of Sai Baba's service to his Guru and the bond they shared, as recounted in Chapter 19.

Chapter 19 provides a deeply personal account of Sai Baba's devotion to his Guru. Baba describes serving him for twelve years, during which time he was raised from a child to an adult with no shortage of food, clothing, or love. The bond was one of intense love and contemplation; Baba states, "I would gaze at my Guru's face with love day and night; I felt neither hunger nor thirst." This illustrates a state of complete absorption in his Guru, who was his sole focus of meditation. His Guru, in turn, was a "veritable idol of devotion and love" who never neglected Baba and always protected him, desiring nothing more than his disciple's unwavering faith and constant contemplation.