What is the underlying message in Chapter 53 about divine will and human agency, particularly in the context of writing the Shri Sai Satcharitra?

Chapter 53 delivers a profound message about the supremacy of divine will over human plans and efforts. It uses Hemadpant's unfulfilled promise to write a summary as a prime example, stating, "Nothing happens by one's own will; Baba’s will is more powerful." This theme is reinforced through the new author, who feels completely unqualified and surrenders his ego. He prays for help and concludes that Sai Baba himself is the true author, stating, "Sai, the breaker of obstacles (Vakratunda), will be the one to write this summary. His glory is immense; my mouth is merely an instrument." The chapter posits that the sacred text is not a product of human intellect but an act of Sai's grace working through a chosen person.