How does the author of Chapter 15 address the audience, and what is the purpose of the ocean metaphor?

In the beginning of Chapter 15, the author addresses the listeners with profound humility, asking them for their grace and attention. He uses a powerful metaphor comparing the audience to a vast ocean. He explains that just as the ocean accepts all rivers—whether the pure water of the Ganges or a muddy village stream—without discrimination, he hopes the listeners will accept his humble storytelling. The author describes himself as a lowly stream wishing to immerse himself in the grand ocean of the listeners. As detailed in Chapter 15, the purpose of this metaphor is to show respect and request acceptance, suggesting that the listeners' own interest in hearing saintly stories is what will ultimately bring fulfillment.