What does the text say about the nature of a Sadguru and their role compared to a biological father?

Chapter 28 provides a profound perspective on the role of a Sadguru. It states that while a father gives birth to the body which is subject to death, a Sadguru's compassion is even greater because the Guru removes the cycle of both birth and death. The text also notes that a Sadguru is proficient in both Shabda-Brahma (the divine word) and shows signs of Para-Brahman (Supreme Being). Even a great knower of profound knowledge is only considered to have the quality of a Sadguru if they can impart teaching to disciples and are established in their own true nature.