According to the start of Chapter 30, what is the fundamental duty of a saint like Sai Baba towards his devotees?

The beginning of Chapter 30 clearly states that the primary and unavoidable task for saints is the uplifting of their own devotees. The text describes this responsibility as inescapable, even for Sai Baba, who is hailed as the 'Acharya (teacher) of the assembly of saints.' It further explains that when saints like Sai bestow their grace, the recipient can attain 'inconceivable great power' and the profound 'wealth of discrimination between Self and non-Self,' which encompasses all knowledge. This underscores the active role a Guru plays in the spiritual elevation of their followers.