What are the dual merits a writer gains by authoring a detailed poetic biography of their Guru?

As explained in Chapter 0, a writer who undertakes the task of creating a detailed poetic Guru biography receives benefits on two levels. Firstly, the act of studying the Guru's life and composing the biography is in itself a form of direct Guru service. Secondly, when other devotees study and perform Parayans of that completed work, the writer also accumulates the merit of serving God within humanity (Jan-Janardan) and performing a public service. This enables the writer to help other devotees achieve the purpose of their lives, compounding the spiritual rewards of their creative effort.