The text mentions a 'great wonder' for the listeners. Can you explain what this was and why it was so impactful?

The 'great wonder' described in Chapter 18 refers to the uncanny and miraculous synchronization between Sai Baba's teachings and the contents of the sacred books being read. Devotees would listen to Baba tell a story in the Masjid, only to be sent to the Wada and hear the exact same narrative being read from the scriptures by Jog. This experience was profoundly impactful because it provided direct confirmation and a deeper understanding of Baba's story. It made it seem as if the ancient texts by Jnaneshwar or Eknath were simply translations of Baba's own immediate words, demonstrating his complete unity with the divine wisdom in the books.