How does Chapter 18 characterize the nature and role of the Sadguru?

Chapter 18 portrays the Sadguru as a supreme, eternal entity, the very embodiment of the "Truth of Brahman." The text describes the Guru as the "Ruler of Maya" who can demonstrate that the world is an illusion. Through a series of victories, the chapter hails the Guru as beginningless, endless, beyond duality, and without blemish, establishing them as the ultimate teacher of self-knowledge. As further explained in Chapter 18, the Guru is likened to monsoon rain clouds that lovingly shower the water of self-bliss upon everyone, guiding each individual according to their worthiness without creating intellectual conflict.