Based on Chapter 30, what kind of power and knowledge does a devotee attain by receiving Sai's grace?

As detailed in Chapter 30, receiving Sai Baba's grace bestows upon a devotee "inconceivable great power." This is not just worldly power, but includes deep spiritual insight. The text specifies that the devotee attains the "wealth of discrimination between Self and non-Self," which means all essential knowledge is gained. Sai is described as the "capable lamp of knowledge" and the "destroyer of the darkness of ignorance." This grace stills the wavering mind, making the path forward for the devotee fearless and free of obstacles, ultimately leading to a state of being fulfilled.