She searched for the link between the healings she was experiencing and the spiritual laws of God. She later wrote that “…in the latter part of 1866 I gained the scientific certainty that all causation was Mind [God], and every effect a mental phenomenon.”
Intensifying her study of the Bible, especially the healings of Jesus, the next three years from 1867 to 1870 were spent making voluminous notes. The development of her thought is traced in these hundreds of pages. The discoveries that were emerging would, in time, produce the sermons, classroom courses, and published writings that would make her one of the most admired and debated women of her day.