What does Chapter 25 say about the significance of one-pointed devotion?

Chapter 25 emphasizes that one-pointed devotion is the primary thing Sai Baba desires from his followers. The chapter explains that a devotee who is faithful and filled with such devotion will lack nothing in attaining their desires. To define this concept, the text references Krishna's words to Uddhava, stating, "The Sadguru is indeed My own form." Therefore, as explained in Chapter 25, worshipping the Sadguru with love is what constitutes one-pointed devotion. The chapter promises that when this faith is established, Sai Baba wards off all misfortunes and suffering for the devotee.