What are the primary themes discussed in Chapter 45 of the Shri Sai Satcharitra?

Chapter 45 begins by emphasizing the supreme power of the Guru, declaring that serving the Guru's feet is even more powerful than attaining Moksha, or liberation. As detailed in the chapter, the Guru's mercy makes the impossible possible and brings happiness. The text then transitions to a reflection on the loss of Sai Baba's physical form, which had been a source of contentment, bliss, and courage for devotees. However, Chapter 45 concludes by offering solace, explaining that although the physical incarnation has ended, this very book serves as His literary form, providing constant remembrance and bringing a unique, indescribable peace to those who listen to the stories.