Why does the author of Chapter 15 compare the listeners to an ocean and himself to a river?

In Chapter 15, the author employs the metaphor of an ocean and a river to express his humility and request the listeners' acceptance. He compares the listeners to a vast, limitless ocean that does not turn back any river, whether it's the pure Ganges or a muddy village stream. By doing so, he humbly asks the gracious listeners to accept his narrative without rebuke. As Chapter 15 explains, the author holds a deep desire to immerse himself in the listeners, trusting that their inherent interest in the stories of saints will be fulfilled by looking upon his effort with grace.