How does Chapter 10 describe the significance and power of a Sadguru?

Chapter 10 posits that the Guru is the one eternal God, and by placing faith in His feet, one's destiny can be changed. It states that pure service to the Sadguru completely destroys worldly existence (Samsara) and helps devotees overcome physical, mental, and divine miseries. Just as one trusts a boatman to cross an ocean, one must trust the Guru to cross the ocean of existence. As Chapter 10 describes, the Guru sees the devotion of his followers and effortlessly grants them knowledge and liberation, destroying their accumulated and current karmas.