Hall developed the Furnishing the Soul Inventory, one of the most widely used measures of Christian spirituality among Christian colleges, Bible institutes and secondary schools in North America. He speaks and consults regularly on spiritual transformation, leadership and organizational development to Christian schools, nonprofits, businesses and churches around the country. Having conducted research on spiritual transformation for over fifteen years, Hall has published extensively on the topic in journals such as theJournal for the Psychology of Religion, Journal of Psychology and Theology, J...