Based on the provided excerpts, what is the central message or theme that Chapter 34 aims to convey to the reader?

The central theme of Chapter 34 is the profound and miraculous healing power of Sai Baba's Udi, which represents his grace and blessings. The chapter itself states that it is a continuation of the previous one, further describing the 'majesty of Udi.' It uses the story of the doctor's nephew and his incurable bone-cyst as a powerful illustration. The narrative demonstrates that where all human efforts, including expert medical science, fail, complete faith in the Guru and his Udi can overcome even the most formidable calamities, offering a path to relief and blissful knowledge.