How does Chapter 26 describe the importance and role of the Guru in achieving spiritual realization?

According to the teachings in Chapter 26, the Guru is presented as absolutely essential for spiritual progress. The text states that in the entire world, only the Guru is capable of granting the knowledge of Truth to a disciple. The devotee's prayer to Sai Baba highlights this dependence, pleading for the Guru to make their intellect turn inward and grant the ability to discriminate between the eternal and the temporary. The chapter emphasizes that true knowledge only becomes meaningful through personal experience, which is a gift granted by the Guru's grace, and that unshakeable faith in the Guru's words is paramount to dissolving the mystery of existence.