What does Chapter 10 say about the role and power of the Sadguru in a devotee's life?

According to Chapter 10, the Sadguru is presented as the one eternal God, in contrast to other gods which are described as illusory. Placing faith in the Guru's feet is shown to have transformative power, capable of changing one's destiny, which is poetically described as 'striking a nail over the lines of destiny.' The Sadguru acts as a boatman, guiding devoted bhaktas across the three types of miseries and the vast ocean of worldly existence (Bhavasagar). When a devotee shows pure service, faith, and devotion, the Sadguru can completely destroy the cycle of Samsara and effortlessly grant them Knowledge (Samvitti) and liberation (Moksha), characterized by bliss.