What is the central message of Chapter 45 regarding the Guru's grace and the legacy left behind in the Shri Sai Satcharitra?

Chapter 45 conveys a dual message about the supreme power of the Guru and the enduring legacy found within the Satcharitra. The chapter begins by extolling the Guru's grace, stating that serving the Guru's feet is more powerful than Moksha and that their mercy makes the impossible possible. It then transitions to lamenting the loss of Sai's physical form but immediately offers solace. As mentioned in Chapter 45, though the physical form has vanished, the book itself acts as His literary form, providing constant remembrance and a means for devotees to attain concentration and a unique, indescribable peace by listening to the stories.