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

Chapter 18 presents a glorious characterization of the Sadguru, hailing him as the "supreme Eternal one" and the "Truth of Brahman." The text states that the Sadguru has the power to show the world as an illusion and is the "Ruler of Maya." He is described as beginningless, endless, and beyond duality. Furthermore, this chapter reveals that the Sadguru can effortlessly point out the "Unperceivable One," a concept that even the Vedas and Shrutis debate endlessly. By his grace, the false logic of "mine" and "thine" dissolves, showing his power to transform a devotee's consciousness.