What does Chapter 28 reveal about the qualities of a Sadguru and the effects of attaining their company?

Chapter 28 defines a Sadguru as one who is proficient in both Shabda-Brahma (the divine word) and shows signs of Para-Brahman (the Supreme Being). A Sadguru is also described as someone established in their own true nature who can impart teachings to disciples. The chapter emphasizes that attaining the company of such saints is a result of the accumulated good karma from many past births rising up. The effects of this association are transformative: the darkness born of delusion is destroyed, the fire of discrimination is ignited, one becomes detached from worldly enjoyments, and accumulated karma is destroyed, leading to a successful life.