How does the author of the Sai Satcharitra describe his own role and capability in writing Chapter 30?

In Chapter 30, the author expresses profound humility, questioning his own qualifications and stating he is merely a vessel for a divine task. He asks, 'what qualification do I have? Who takes up this task upon themselves?' The author firmly believes that Sai Baba is the true doer, getting the work accomplished through him. He refers to Sai as 'the illuminator of my speech' and 'the capable lamp of knowledge' who destroys the darkness of ignorance. This faith in the compassionate Lord stills the wavering of his mind and removes all apprehension, making him feel no effort in the process.