Why do saints and incarnations appear on Earth, and how should one approach understanding them, as described in Chapter 23?

As explained in Chapter 23, the incarnations of saints occur on this earth out of benevolence, specifically for the salvation of what the text calls "dull-witted souls," and this is considered a grace of the Almighty. The chapter advises that one cannot understand the true state of a saint by external factors like their caste or what they eat, as their reality is always beyond such things. Furthermore, it suggests that having merit (Punya) in store is a prerequisite for even developing the desire in one's heart to hear the stories of saints, which is the path to attaining happiness and contentment.