How did the author of the Sai Satcharitra view his own role in writing the book, based on the beginning of Chapter 30?

In Chapter 30, the author expresses profound humility, viewing himself as merely an instrument for a divine task. He questions his own credentials, stating, "what qualification do I have? Who takes up this task upon themselves? He whose work it is, He Himself gets it accomplished." He firmly believes that Sai Baba is the true force behind the book's creation. The author describes Sai as the "illuminator of my speech" and the "capable lamp of knowledge" who destroys the darkness of ignorance. This faith allows him to proceed without apprehension, confident that the burden of the work is not his, but Sai's, which stills the "wavering of my mind."