Chapter 53 mentions a promise made in a previous chapter. What was this promise and how does the chapter explain its unfulfillment?

In the introduction to Chapter 53, the text explicitly recalls a promise made by Hemadpant in a previous chapter: "First I will look back (review), then provide the summary, and thus complete the book." The chapter then explains that this promise was not fulfilled by Hemadpant because he suddenly passed away. The narrative frames this event not as a failure but as an instance where a higher power's plan takes precedence, stating that "Nothing happens by one's own will; Baba’s will is more powerful." This highlights a central theme of surrender to the Sadguru's will.