What does Chapter 25 reveal about the nature of Sai Baba and the importance of devotion to him?

Chapter 25 begins by extolling Sai Baba as an "ocean of mercy," the "manifest incarnation of God," the "Supreme Brahman," and a "great Yogeshwar." It emphasizes that Sai desires only one-pointed devotion from his followers. The chapter explains that a devotee who is faithful and filled with devotion will lack nothing in attaining their desires. It even references Krishna's words to Uddhava, "The Sadguru is indeed My own form," to underscore the importance of worshipping the Sadguru with love, which is the essence of one-pointed devotion. This sets the stage for the stories that follow, which illustrate these very principles.