Can you explain the philosophical concept of 'Nirguni' and 'Saguni' as it appears in Chapter 30?

The transition from 'Nirguni' to 'Saguni' is a key philosophical point in Chapter 30 of the Sai Satcharitra. 'Nirguni' refers to the divine in its formless, attributeless, and absolute state. 'Saguni' refers to the divine with form and attributes, a manifestation that can be perceived and related to. According to the teachings in Chapter 30, the divine initially resides as Nirguni. However, it is 'through the qualities of devotees' devotion' that the formless is drawn 'into form with attributes (Saguni).' This implies that the incarnation of Sai Baba is a compassionate response to the yearnings of his followers, making the abstract, universal principle accessible and personal for the sake of their spiritual upliftment.