What is the specific role of the Guru in helping a disciple attain true knowledge, according to the philosophy presented in Chapter 26?

In Chapter 26 of the Shri Sai Satcharitra, the Guru is presented as the only one capable of granting the knowledge of Truth to a disciple. The text states that the illusory nature of the world dissolves only when the time for awakening through the Guru's word arrives. The author prays to Baba to make his intellect turn inward and grant him discrimination between the eternal and the temporary. The Guru's words, along with Vedanta, are seen as the foundation for unshakeable faith, and it is through the Guru's grace that a disciple can hope to gain the light of non-dual bliss.