How does Chapter 19 explain the nature of true devotion to a supreme being like Sai?

Chapter 19 illustrates the nature of devotion by explaining that the supreme power values the devotee's faith above all else. It provides several analogies to make this point. For instance, just as a devotee performs Aarti to the Sun with a small wick, or offers a jaggery snack to a Ganesha idol made of jaggery, the act is symbolic. As the chapter states, one might take a palmful of water from the ocean and offer it back as an oblation. In all these cases, the supreme power, whether the Sun or the Ocean, looks at the devotee's faith and does not weigh the right or wrong of the action, as the goal is to honor the devotee's sentiment.