According to Chapter 11, why is it important to worship a Guru with a physical form, like Sai Baba?

Chapter 11 of the Shri Sai Satcharitra emphasizes the importance of devotion to a Saguna, or manifest, Guru. The text posits that as long as a devotee has a physical body, the Guru must also be in a physical form for worship to be suitable, as determined by the scriptures. It argues that true devotion cannot manifest without meditating on a manifest form. This meditation is what allows the 'bud of the mind' to open and bloom, leading to spiritual fragrance and nectar. Therefore, worshiping a Guru with a physical form is presented as the necessary first step for a devotee to experience loving devotion and spiritual growth.