Based on Chapter 25, how does one-pointed devotion benefit a follower of Sai Baba?

Chapter 25 emphasizes that one-pointed devotion is the key to receiving Sai Baba's grace. The text states that Sai, as the supreme embodiment of mercy, desires only this singular focus from his followers. For a devotee who is faithful and filled with this devotion, the chapter promises that they will lack nothing in attaining their desires. It further explains that once this one-pointed faith is established, Sai wards off all the misfortunes and suffering of that devotee, granting them their desired objects. This concept is reinforced by quoting Krishna's words to Uddhava, defining one-pointed devotion as the loving worship of the Sadguru, who is the manifest form of God.