What is the significance of meditating on Sai's physical or 'Saguna' form as explained in this chapter?

As detailed in Chapter 52, meditating on Sai's physical (Saguna) form is presented as an essential step toward higher understanding. The text argues that the light of the Self cannot be known without first engaging with the Saguna form, because the formless, attributeless Parabrahma is exceedingly difficult to grasp directly. Chapter 52 teaches that by meditating immensely on Sai's physical form, the devotee's perception of the form eventually vanishes, allowing the subtle nature of the true Self to manifest.