Based on the events in Shirdi, why was the Uddhava Gita considered so significant?

The Uddhava Gita, which is the instruction from Krishna to Uddhava found within the Nath Bhagawat, was held in extremely high regard in Shirdi. Chapter 18 describes it as a 'very divinely inspired book' whose sweetness is beyond description. It is even praised as being better than the famous dialogue between Krishna and Arjuna in the Bharata (Mahabharata). Sai Baba himself ordered its reading for the 'salvation of souls,' promising that those who read it with faith would attain God instantly, without needing to retreat to a forest. Baba had Bapusaheb Jog read this text daily, alongside the Jnaneshwari, making it a cornerstone of the spiritual life He cultivated for his devotees in Shirdi.