What is the role of the Guru as described in the philosophical invocation of Chapter 26?

In Chapter 26, the Guru is presented as the supreme and sole entity capable of granting the disciple the knowledge of Truth. The text emphasizes that the illusion of the world dissolves only when the time for awakening through the Guru's word arrives. The author notes that through the "Great Sayings (Mahavakyas) of the Sadguru, the light of non-dual bliss shines forth." This chapter underscores that when the Guru-Soul, who is God, is pleased, the true nature of existence is realized, making the Guru's guidance indispensable for spiritual liberation.