Can religious feelings improve and develop in therapy? How? In 2018, the author was startled to learn that, without mentioning a word regarding religion or spirituality in therapy, trauma therapy clients were reporting an unsought but very welcome improvement in feelings of religious faith and trust. This improvement only happened to those who had some kind of religious input earlier in life. This book sets the context for this discovery, traces its development through five of the author's papers, and suggests directions for progress. This book sets a context for addressing questions about the loss and gain of religious faith and spirituality.