What is the dual benefit, for the author and the community, of creating and studying a detailed Guru biography?

The text in Chapter 0 describes a profound, symbiotic relationship. Firstly, by studying and performing Parayans of a detailed poetic Guru biography, the writer is understood to be performing Guru service. Secondly, and just as importantly, when other devotees also study and engage in Parayans of that same work, the writer accrues the merit of serving God in humanity (Jan-Janardan) and performing public service. This process simultaneously helps the other devotees achieve the purpose of their lives, creating a virtuous cycle that benefits the author, the individual reader, and the entire community.