What are some of the primary ways Chapter 18 describes the Sadguru's divine nature?

Chapter 18 opens with powerful praises for the Sadguru, portraying him as the ultimate reality. He is hailed as the "supreme Eternal one" and the "Truth of Brahman." The text further describes him as the "Ruler of Maya," indicating his power over the world of illusion, and as the one who is "Beginningless and Endless." As detailed in the opening verses of Chapter 18, the Sadguru is also revered as the ultimate "teacher of the knowledge of the Self," who is beyond duality and without any blemish, guiding devotees to profound spiritual truths.