What are the main teachings about the role of the Guru and the importance of faith as presented in Chapter 16?

Chapter 16 establishes the Sadguru as the ultimate refuge, describing him as a king on the throne of peace whose purpose is to uplift the poor and lowly. The chapter stresses that faith is paramount in a disciple's relationship with the Guru. It is explained that while the Guru is 'Aptakama' (desires fulfilled), he accepts offerings made with sincere faith but rejects those offered with pride. As detailed in Chapter 16, the path to union with Brahman is through faithful service to the Guru, as all other means will fail. The disciple must simply surrender, because the Guru is more generous than any other being, providing the ultimate gift of Brahman.