What was the 'great wonder' that devotees experienced when Baba sent them to listen to the scripture readings?

The 'great wonder' experienced by listeners was a miraculous synchronization between Sai Baba's teachings and the sacred texts being read. Chapter 18 recounts how Baba would sometimes tell a devotee a short story and then immediately instruct them to go to the Wada where the reading was happening. Upon arriving, the sincere listener would be astonished to find that the exact same story they had just heard from Baba was being read from the book at that very moment. This provided profound confirmation and understanding, making it seem as though the ancient words of Jnaneshwar or Eknath were a direct translation of Baba's own speech.