Based on the text, how does Balasaheb Deo's story illustrate Sai's relationship with his devotees?

The story of Balasaheb Deo serves as an example of the principle mentioned at the beginning of this section in Chapter 41: that Sai is incredibly loving toward devotees with a "true taste for spiritual matters." Deo's persistent, albeit unsuccessful, desire to read the sacred Dnyaneshwari demonstrates this spiritual taste. The narrative explains that Sai wards off the difficulties of such devotees and gives them self-bliss. Deo's struggle and his ultimate surrender by vowing to wait for Sai's command perfectly sets up the expectation that Sai will intervene to fulfill his wish and grant him the "addition of devotion."