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

In Chapter 26 of the Sai Satcharitra, the Guru is presented as the sole entity capable of granting a disciple the knowledge of Truth (Jnana). The text states that when the Guru, who is equated with God, is pleased, the true nature of the universe is realized. The author prays to the Sadguru, Sai Baba, to make his intellect turn inward and to bestow upon him the ability to discriminate between the eternal and the temporary. The Guru's words are seen as the key to awakening and achieving the light of non-dual bliss, dissolving the illusion of the physical world.