What is the underlying spiritual message conveyed through the introduction to Damu Anna's story?

The introduction to Damu Anna's story in Chapter 25 is designed to convey a profound spiritual message about the nature of faith and divine grace. The author states that the story will demonstrate how Sai Baba, the "Guru-Mother" who is an "Ocean of Mercy," wards off all misfortunes for a devotee once "one-pointed faith is established." The narrative is presented as a testament to Sai's love, showing that He not only removes suffering but also grants the desired objects of His followers. By framing the story this way, the text encourages listeners to develop unwavering faith, promising that by understanding this divine principle, their own difficulties will vanish and their hearts will be filled with joy.