What does Chapter 10 say about the role of a Sadguru and the benefits of placing faith in them?

Chapter 10 powerfully describes the role of the Sadguru as the one eternal God who can change a devotee's fate, metaphorically "striking a nail over the lines of destiny." It explains that pure service to the Sadguru can completely destroy the worldly existence (Samsara) and help devotees cross the three types of miseries. According to the teachings in this chapter, a Guru is like a boatman for the ocean of existence. By placing faith in the Guru, a devotee can receive Knowledge, attain liberation (Moksha) effortlessly, have the knots of the heart broken, and see their accumulated and current karmas destroyed.