How is the act of writing the Satcharitra itself an example of the principle that Sai is the ultimate doer?

The author of the Satcharitra explicitly states that he is not the true author of the work. In Chapter 50, he explains that 'Sai himself makes his story be written, giving the pen into my hand.' He rejects the idea of taking credit or blame, asserting that since Sai himself is the doer, the subject is completed by him. The author describes himself as a mere instrument, into whom the 'Guru-God' entered to illuminate the subject for the sake of the readers. This act of writing serves as a practical demonstration of the teaching that true action comes from a higher source, removing individual 'doership' and revealing the divine prowess and glory of Sai as the ultimate agent.