From a philosophical standpoint, how does Chapter 30 detail the Guru's role in a devotee's spiritual liberation and attainment of knowledge?

Chapter 30 of the Sri Sai Satcharita articulates the soteriological function of the Guru, presenting Sai Nath as the primary agent of a devotee's salvation. The text asserts that by metaphorically holding the Guru's feet, devotees achieve the "dissolution of all sins." This act of surrender is the first step toward purification. The chapter further explains that when the Guru bestows grace, the devotee attains "inconceivable great power," which manifests as the "wealth of discrimination between Self and non-Self"—the very essence of supreme knowledge (jnana). Describing Sai as the "destroyer of the darkness of ignorance," this chapter frames the Guru not merely as a guide, but as the essential catalyst through which liberation from both sin and ignorance is realized.