How does the act of writing and studying a Guru's biography, like the Shri Sai Satcharita, function as a form of service to both the Guru and the wider community?

According to the principles outlined in Chapter 0, this practice constitutes a multi-faceted service. The Sadguru accepts service from devotees by having his biographies written, studied, and read in Parayans. The author performs Guru service through the act of creation. Concurrently, when other devotees study and perform Parayans of the work, the writer gains the merit of serving God in humanity (Jan-Janardan) and public service. This communal study helps all participating devotees achieve the purpose of their lives, thereby building a spiritual community centered on the Guru's teachings.