When does the act of writing a Guru's biography become a form of public service?

The text explains that writing a Guru's biography transcends personal devotion and becomes a public service at a specific point. As detailed in Chapter 0, this occurs when "other devotees also study and perform Parayans" of the work. At that moment, the writer is credited with the merit of serving "God in humanity (Jan-Janardan) and public service." This is because the writer's effort enables a wider community of devotees to engage in devotional study, thereby helping them achieve the purpose of their lives and creating a shared spiritual benefit.