Explain the dual benefits that arise from writing and studying a detailed poetic Guru biography, as outlined in the preface.

As detailed in Chapter 0, the act of creating and studying a Guru's biography yields multiple layers of benefits. For the writer, the act of composing the biography is in itself a form of Guru service. Simultaneously, when other devotees study and perform Parayans of that same work, the writer gains the additional merit of serving 'God in humanity' (Jan-Janardan) and performing public service. For the other devotees who engage with the text, the benefit is that they can achieve the ultimate purpose of their lives, implying spiritual fulfillment and liberation.