What are the key teachings in Chapter 11 regarding Sai Baba's powers and the importance of devotion to a Guru?

The main teachings in Chapter 11 revolve around Sai Baba's greatness, including his authority over the five elements of nature. The chapter explicitly states that figures like Indra, Agni, and Varuna obey Baba's commands. Beyond his powers, a central theme is the importance of devotion to a Saguna, or manifest, Guru. As described in Chapter 11, faith in the Guru's word should be a devotee's foundation, and one should renounce worldly desires to properly perform worship. The text emphasizes that meditating on the Guru's manifest form is essential for devotion to arise, which in turn allows the devotee's mind to open and experience divine love.