Describe the 'great wonder' of Sai Baba's teaching method involving the scripture readings in the Wada.

Sai Baba employed a profound and unique teaching method that was considered a 'great wonder' by his followers. According to chapter 18, He would sometimes tell a devotee a short story and then, while they were still absorbing it, instruct them to go to Sathe's Wada. Upon arriving, the devotee would discover that the reader, Bapusaheb Jog, was coincidentally reading the very same story from a sacred text like Jnaneshwari or the Nath Bhagawat. This experience provided confirmation and a deeper, more complete understanding of the story Baba had just told, making the scriptures seem like a direct translation of Baba's own words.