What is the connection between a Sadguru and one-pointed devotion as outlined in this chapter?

Chapter 25 clarifies that Sai, as the supreme embodiment of mercy, desires only one-pointed devotion from his followers. The text explains that a devotee who is faithful and filled with such devotion will lack nothing in attaining their desires. To define this concept, the chapter references the words of Krishna to Uddhava: "The Sadguru is indeed My own form." Therefore, the text concludes that to worship a Sadguru with love is precisely what one-pointed devotion is named. This establishes a direct link, suggesting that true devotion is expressed through loving worship of the Sadguru, who is a form of God Himself.