According to Chapter 1, how does Sai Baba embody the qualities of multiple deities, including the Hindu trinity?

Chapter 1 of the Sai Satcharitra establishes Sai Baba's supreme and all-encompassing divinity by identifying him with multiple deities. The text explicitly states, "This Sai himself is Ganesha Ganapati," the remover of obstacles. It also proclaims, "Sai himself is Goddess Saraswati," who imparts knowledge. Furthermore, after paying respects to the trinity of Brahma, Vishnu, and Shankar (representing the qualities of Rajas, Sattva, and Tamas), the author addresses Sai directly, affirming, "O self-effulgent Sainath, you alone are our Lord of Ganas (Ganadhish), the Lord of Savitri (Brahma), the Lord of Rama (Vishnu), or the Lord of Uma (Shiva)." This illustrates the teaching that Sai is the non-dual embodiment of all these divine forms.