Based on Chapter 18, what is the nature of the Sadguru and their relationship to the world?

Chapter 18 portrays the Sadguru as a transcendent and supreme being, referring to them as the "supreme Eternal one" and the "Truth of Brahman." The chapter describes the Guru as the "Ruler of Maya," who, through direct experience, reveals the illusory nature of the world to devotees. It emphasizes that the Guru is beyond duality, without blemish, and is the ultimate teacher of the knowledge of the Self. This chapter further illustrates that the Guru is like the monsoon rain clouds, lovingly showering the water of self-bliss upon everyone, making the divine accessible.