How does Chapter 19 of the Shri Sai Satcharitra describe the nature of Sai and the Supreme Reality (Brahman)?

Chapter 19 explains that Sai is the Brahman that resides in everything, from the smallest atom to the vast universe, being subtler than the subtlest and greater than the greatest. The author expresses a desire to give form to this Supreme Reality, an act which is compared to offering a small wick to the Sun or a palmful of ocean water back to the ocean. As this chapter describes, this may seem inappropriate, but the divine, like the Sun or Ocean, looks only at the devotee's faith. The text further states that the Supreme Being, or Purusha, is the ultimate goal where the senses and mind find rest, and this is indeed the Pure Brahman.