What happened to Mary Baker Eddy in 1866 that she described as a spiritual turning point?

In 1866, Mary Baker Eddy experienced a severe fall that left her injured. While recovering, she turned to a Gospel account of healing in the New Testament, which led to a moment of profound spiritual illumination.12

She described this event as a turning point that brought about her immediate recovery and provided a new direction for her life. This experience gave her a glimpse of what she termed "Life in and of Spirit," which she came to understand as the sole reality of existence. She concluded that mortal thought creates a subjective state called matter, which obscures the true sense of Spirit. This discovery served as the foundation for her subsequent years of scriptural study, healing work, and the eventual publication of her major work, Science and Health with Key to the Scriptures.12