What do the stories of Karnik and Appasaheb teach us about making promises and the nature of our minds as devotees?

The accounts of Karnik and Appasaheb in Chapter 33 serve as powerful illustrations of the nature of the human mind and devotion. The text describes the mind as being subject to "resolves and counter-resolves," where a good initial impulse can be lost to later hesitation. Karnik acted on his impulse and felt the grace of Sai, whereas Appasaheb serves as a more common example. As Chapter 33 states, "We all are devoted to verbal promises; at the time of giving, much hesitation." Appasaheb made a promise in his heart but faltered when the opportunity to fulfill it arrived. The lesson is that if a good inclination arises, it should be nurtured and acted upon, as that is where the true benefit lies.