Please summarize the different ways Baba's divine intervention is described in chapter 27.

Chapter 27 describes several forms of Sai Baba's divine intervention. These include life-saving acts, such as averting a suicide, and spiritual guidance, like establishing a devotee with their Guru. His method of initiation is noted as being wonderful and often full of humor. The chapter also details a specific practice where devotees would give books to Baba, such as 'Viveksindhu' or 'Santaleelamrut', to receive them back as a blessing, believing this would bring great merit. Ultimately, Baba's way is compared to a wise doctor who tailors the 'medicine' of grace to each devotee's unique capacity and disposition.