This study reports on in-depth interviews with 57 highly religious, middle-aged married couples representing the major Abrahamic faiths (Christianity, Judaism, Islam) residing in New England and Northern California. The study uses grounded theory methods to create themes and a model describing the ways that religiosity influences marital conflict. Couples reported that religiosity affects the conflict in their marriage at three phases of the conflict process: (a) problem prevention, (b) conflict resolution, and (c) relationship reconciliation. Practitioners may assist religious couples that are struggling with marital conflict by encouraging them to look to religious beliefs and practices.