What qualities define a Sadguru as described in the teachings of Chapter 28?

Chapter 28 provides a clear definition of a Sadguru's qualities. It states that a Sadguru is one who is proficient in both Shabda-Brahma (the divine word) and Para-Brahman (the Supreme Being). Crucially, even if one has profound knowledge, the quality of a Sadguru involves the ability to impart that teaching to disciples. The chapter further elevates the Guru's role by contrasting it with a father's; while a father gives birth to the physical body which is subject to death, the Guru shows 'additional compassion' by removing the cycle of both birth and death.