How does the act of writing and reading a Guru's biography benefit both the author and the reader?

Chapter 0 details a symbiotic spiritual benefit. By studying and performing Parayans of a detailed Guru biography, a devotee performs Guru service. The author of such a work also performs Guru service through the act of writing. Furthermore, when other devotees study and perform Parayans of that book, the writer gains the additional merit of serving God in humanity (Jan-Janardan). Simultaneously, those other devotees who engage with the text are guided towards achieving the ultimate purpose of their lives, creating a circle of shared spiritual merit.