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

The preface in Chapter 0 explains that creating and engaging with a detailed Guru biography offers multifaceted spiritual benefits. For the writer, the act of composing the biography is considered a form of direct Guru service. Simultaneously, when other devotees study this work and perform Parayans, the author gains the additional merit of serving God within humanity (Jan-Janardan) and performing a valuable public service. For the devotees who read the text, studying the saint's life helps them achieve the ultimate purpose of their own lives, making it a spiritually enriching practice for all involved.