Can you explain the role of the 'Saguna' (form) in spiritual realization as described in Chapter 52?

Chapter 52 emphasizes the critical importance of the 'Saguna' (form) as a means to spiritual realization. It states that the 'Parabrahma,' which is without attributes and formless, is entirely difficult to understand on its own. Therefore, one cannot know the light of the Self without first entering the Saguna form. The chapter instructs that by meditating immensely on Sai's physical form (the Saguna), the subtle nature of the Self will eventually manifest as the form itself vanishes. Sai Baba showed his own feet, a Saguna manifestation, to lead his devotees toward the supreme goal, illustrating that the form is the gateway to understanding the formless.