How does Chapter 25 explain the concept of one-pointed devotion and its rewards?

Chapter 25 emphasizes that Sai Baba desires "one-pointed devotion" from his followers. It states that a devotee who is faithful and filled with this devotion will lack nothing in attaining their desires. The chapter elevates this concept by referencing Krishna's words to Uddhava: "The Sadguru is indeed My own form," suggesting that worshipping the Sadguru with love is the essence of one-pointed devotion. As further evidence, Chapter 25 introduces the story of Damu Anna, stating that it will demonstrate how Sai "wards off all the misfortunes" and "grants the desired objects" for any devotee once "one-pointed faith is established."