Can you explain the community benefit of performing Parayans of a Guru's biography?

Performing Parayans, or devotional readings, of a detailed Guru biography offers significant community benefits. As described in Chapter 0, when devotees study and perform these Parayans together, the writer of the biography gains the merit of serving God in humanity (Jan-Janardan) and performing public service. More importantly, this shared spiritual activity helps all the participating devotees to achieve the purpose of their lives. The Sadguru accepts this form of service from the entire congregation, creating a strong bond and a shared spiritual purpose among the community of followers.