How does the author of the Shri Sai Satcharitra address the audience at the beginning of Chapter 15, and what is the purpose of this address?

At the start of Chapter 15, the author addresses the listeners with great humility, pleading for their grace and attention. The text describes the author's prayer for listeners to 'contemplate for a moment on your own Guru' and prepare their minds. The author uses the metaphor of an ocean to describe the audience, noting that just as the ocean accepts all rivers without distinction, the listeners should accept the stories being told. The purpose of this address, as detailed in Chapter 15, is to establish a receptive connection, ensuring that the 'nectar-like story' can be partaken with faith, which will lead to devotion and fulfillment.