Why did the author of the Sai Satcharitra feel compelled to write the book, even though he felt words were inadequate to describe Sai Baba?

In Chapter 49, the author expresses a profound sense of inability to capture the Sadguru's greatness with words, noting that even the Vedas and Puranas grew weary in their praise. His initial feeling was that silence would be the most fitting tribute. However, he explains that the bliss he experienced from Sai's qualities was like a sweet delicacy he could not enjoy alone. This desire to share the experience with fellow devotees, so that the bliss would double, took root in his soul. Furthermore, he clarifies that he is merely an instrument. He states that Sai Baba Himself provided the inspiration and remembrance needed to complete the book, essentially getting His own stories written through the author. This divine prompting is why he undertook the task despite its inherent difficulty.