How does the creation and study of a Guru's biography, like the Shri Sai Satcharita, serve both the author and the wider community of devotees?

As explained in Chapter 0, the creation and study of a detailed Guru biography is a profound form of reciprocal service. For the author, writing a comprehensive biography is considered a direct form of Guru service. Simultaneously, when other devotees study and perform devotional readings (Parayans) of the work, the author gains the merit of serving God within humanity and performing public service. This framework, mentioned in Chapter 0, shows that the Sadguru accepts service from both the writer and the congregation of devotees, allowing all to benefit spiritually.