What is the role of the Guru in attaining spiritual knowledge, according to Chapter 26?

According to the teachings in Chapter 26, the Guru is absolutely essential 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." The author prays to Sai Baba, the Sadguru, to turn his intellect inward and grant him the ability to discriminate between the eternal and the temporary. The chapter emphasizes that unshakeable faith in the Guru's words is necessary for self-knowledge to manifest. True knowledge is not just theoretical but must be realized through personal experience, which is a gift granted through the Guru's grace and power.