Could you summarize the introductory section of Chapter 51 before it begins the story of Kakasaheb?

The introductory part of Chapter 51 is rich with invocations and philosophical points. It opens with salutations to various deities and to Sadguru Sainath, praising him as the illuminator of the Gita's meaning. The chapter then recaps a theme from the previous chapter about the destruction of ignorance, linking it to a dialogue in the Bhagavad Gita between Krishna and Arjuna. It emphasizes that the destruction of delusion (moha) is the key outcome, not the attainment of knowledge. Following this discussion, Chapter 51 announces its narrative intent: to tell the "marvelous account of how Kakasaheb was established in Shirdi" and three other devotee stories.