How does performing a 'Parayan' of a work like the Shri Sai Satcharita contribute to the spiritual merit of the author and the participants?

According to the principles discussed in Chapter 0, performing a Parayan of a detailed poetic Guru biography generates spiritual merit for all involved. The writer is considered to be performing Guru service through the act of creating the biography. When other devotees also study and perform Parayans of that same work, the writer is said to gain the additional merit of serving 'God in humanity' (Jan-Janardan) and public service. As Chapter 0 notes, these other devotees who participate in the study and reading also benefit immensely by achieving the purpose of their lives through this devotional practice.