What metaphors does the author use in Chapter 47 to convey the immense spiritual power of Sai Baba and other saints?

Chapter 47 employs several vivid metaphors to describe the spiritual stature of saints like Sai Baba. It opens with the powerful image of the River Ganges, which washes the sins of the world and becomes soiled, desiring the dust from a saint's feet for its own purification. This illustrates that saints possess a cleansing power greater than even the holy river. Another metaphor used in Chapter 47 is that "In the light of the sun of His grace, the firefly of worldly existence hides, losing its luster," signifying how Sai's grace completely overshadows worldly concerns. Finally, the author compares being under Sai's protection to sitting under a Kalpataru (wish-fulfilling tree), where all needs are met, emphasizing the endless supply of spiritual nourishment he provides.