What is the significance of performing a 'Parayan' of a Guru's biography, and how does it benefit the devotee community?

According to the provided text, performing Parayans or Saptahs of a detailed poetic Guru biography is a profound form of Guru service. Chapter 0 explains that when a writer creates such a biography, they perform this service. Furthermore, when other devotees also study and perform Parayans of the work, the writer gains the merit of serving God in humanity (Jan-Janardan). This communal act of study and devotion helps all participating devotees achieve the purpose of their lives, fostering a shared spiritual journey and strengthening the community bond.