Based on Chapter 12, what is the role of a Guru like Sai in overcoming duality and the limitations of "dry knowledge"?

According to Chapter 12, a Guru like Sai is the embodiment of Truth, Consciousness, and Bliss, who stills the turbulent waves of worldly existence. His primary role, as described in this chapter, is to remove the obsession with duality through the knowledge of non-duality, a feat He can accomplish even for the dull-witted. The text contrasts this deep, faith-based wisdom with the "stiffness of dry knowledge," which it declares is fruitless. It is through the saint's compassion and the devotee's firm faith that true understanding is achieved, transcending mere intellectualism.