What is the significance of Sai's physical form (Saguna) in the path to understanding the ultimate, formless reality (Parabrahma), as explained in Chapter 52?

In Chapter 52, the significance of Sai Baba's physical, or Saguna, form is explained as a crucial step in spiritual realization. The text states that meditating on Sai's physical form is the means by which the subtle nature of the Self can manifest. It posits that without first engaging with the Saguna form, the light of the inner Self cannot be known. The chapter goes on to clarify that the Parabrahma, which is without attributes and formless, is otherwise entirely difficult to comprehend. Therefore, Sai's manifestation in a physical body provided a tangible focus for devotion, mysteriously leading the faithful towards the supreme, formless goal.