How does Chapter 12 describe Sai Baba's role in helping devotees overcome ignorance and duality?

Chapter 12 portrays Sai Baba as a powerful spiritual guide who helps individuals transcend worldly illusions. He is described as the 'embodiment of Truth, Consciousness, and Bliss' who, through the knowledge of non-duality, removes the obsession with duality even from the dull-witted. The chapter further characterizes saints like Sai as a sun that dispels the darkness of ignorance. It also contrasts this true, faith-based understanding with the 'stiffness of dry knowledge,' which is deemed fruitless, suggesting that firm faith in a guru like Sai is the key to spiritual progress, a core teaching found in Chapter 12.