How does Chapter 28 define the omnipresence of Sai and the essential qualities that establish him as a Sadguru?

Chapter 28 begins by establishing Sai's all-pervading nature, stating that "Sai is not separate from anyone; Sai dwells in all beings." This omnipresence extends from the highest celestial being, Brahma, down to the ant and the smallest insect. The chapter then defines his status as a Sadguru through two key aspects. First, he is "complete in Shabda-Brahma (the divine word)" and simultaneously "shows the signs of Para-Brahman (Supreme Being)." The text asserts that being proficient in both these aspects is a defining quality of a Sadguru, capable of imparting teachings to disciples and guiding them toward their own true nature.