What is the meaning of true devotion and service according to Sai's teachings?

In Chapter 3, true service and devotion are revealed to be internal states rather than external actions. Devotion, or 'My Devotion,' is defined as the act of turning one's tendency (Vritti) inward toward the divine 'Me,' which is pure consciousness and bliss. Similarly, true service is the ultimate act of surrender, where one's individual 'I-ness' is offered at Sai’s feet. The text emphasizes that one should surrender exclusively and merge into the divine, just as a river surrenders its identity to the ocean. By doing so, the devotee becomes the very form of the one they worship.