How does the author describe the nature and form of the Guru at the beginning of Chapter 12?

At the start of Chapter 12, the author describes the Guru, Sadguru Sainath, in exalted terms. The Guru is presented as the very embodiment of Truth, Consciousness, and Bliss, and the source of all joy. A key role of the Guru, as mentioned in this chapter, is to still the "waves of worldly existence" and remove the obsession with duality from a person's mind, even if they are dull-witted. The text uses a powerful metaphor to describe the Guru's form, stating that just as the sky expands and fills all places, so is the Guru's form depicted, which only the virtuous and fortunate are able to experience.