The source tells the story of a devotee's father facing health and work issues. How does this narrative illustrate Baba's method of testing devotees?

The story of the boy's father in Chapter 29 serves as a practical example of the philosophical teachings presented just before it. This man, described as a loving and virtuous devotee, faced significant life challenges in his old age: his health declined, his eyes grew dim, and he no longer had the strength to work, forcing him to take extended leave. This situation perfectly embodies the 'thorns upon thorns' and 'difficulties' mentioned in verses 125 and 128. According to the chapter's logic, such a trial is precisely the kind of 'shaking' Baba uses to refine and purify faith. While the outcome isn't detailed, the narrative implies that this is a test. By facing such a calamity while, as instructed, 'remembering Sai continuously,' the devotee's faith is meant to be strengthened and ultimately made firm.