Can you explain the philosophical concept of Sai moving from 'Nirguni' to 'Saguni' as detailed in Chapter 30 and its significance for a devotee?

Chapter 30 of the Sri Sai Satcharita presents a key theological idea about Sai Baba's divine nature. It states that He initially resides in a formless, attributeless state known as 'Nirguni'. However, it is through the compelling force of "the qualities of devotees' devotion" that He manifests into a form with attributes, or 'Saguni'. The significance for the devotee is immense, as this transformation makes the abstract, inaccessible Divine become tangible and approachable. As this chapter describes, this Saguni form allows devotees to have His 'darshan' to dispel fear and to hold His feet for the dissolution of sins, making the spiritual journey accessible.