What metaphors are used in the text to describe the author's inability to write the book without Sai Baba's grace?

Chapter 3 uses several powerful metaphors to illustrate the author's dependence on Sai Baba's grace for writing the sacred text. The author compares himself to a blind man who can only walk the straight path by using Baba as his staff. He equates the act of writing to a mute person being able to speak like the eloquent Brihaspati or a lame person crossing Mount Meru, feats made possible only by an inconceivable power. Furthermore, he likens his creative output to the tide in the ocean, which is not the ocean's own doing but is caused by the moon, symbolizing how Baba's grace is the true source of his words.