Based on the opening of Chapter 26, what is the significance of a Guru in attaining true knowledge?

Chapter 26 emphasizes that the Guru is indispensable for spiritual realization. The text explicitly states that in the world, only the Guru is capable of granting the knowledge of Truth to a disciple. True knowledge, which dispels the illusion of the world, arrives through the Guru's word. The author prays for the Sadguru's grace to make his intellect turn inward and to provide the discrimination between the eternal and the temporary. This chapter posits that when the Guru-Soul, who is God, is pleased, the true nature of reality is realized, and the light of non-dual bliss shines forth through the Guru's Great Sayings (Mahavakyas).