Describe the benefits and purpose of studying and performing a Parayan of a detailed Guru biography.

According to the preface, studying and performing a Parayan, or devotional reading, of a detailed poetic Guru biography serves multiple purposes. For the author, the act of writing the biography is a form of Guru service. As Chapter 0 further explains, when other devotees also study and perform Parayans of that work, the author gains the merit of serving God in humanity (Jan-Janardan) and public service. For the other devotees engaging in the study, this practice helps them to achieve the ultimate purpose of their lives. It is a mutually beneficial spiritual activity centered on the Guru's life and teachings.