Although the Wounded Heart material was written specifically for those who have experienced sexual abuse, the principles outlined in the book transcend that one application. In addition, the supplemental materials from Gospel Transformation and Tim Keller help all participants understand the impact of betrayal and the need for restoration, forgiveness and growing authenticity in relationships. About 50% of the members of each group have experienced some form of sexual abuse. The other 50% will have experienced some other form of abuse (physical or emotional), a significant betrayal or loss in their lives, or are aware of a confusing sense of disconnect in relationships. Among all the reasons for which people come to the groups, a common denominator is the desire for more relationally.