Mahoney and colleagues’ theorizing about the potential role of sanctity as a central feature of religion/spirituality is invoked to examine the relationships among sanctity of marriage, (un)forgiveness, sacrifice, and both positive and negative marital satisfaction. The study examined the perspectives of both members of 342 marital dyads using an Actor–Partner Interdependence Model and a multilevel path modeling. The results indicate that sanctity is related positively to marital satisfaction and negatively to martial dissatisfaction. Sanctity emerged as a strong predictor of marital quality even after accounting for forgiveness, unforgiveness, and sacrifice. Though sanctity is directly linked to positive marital satisfaction, the mediation effects via (un)forgiveness were not significant; however, a mediation effect via sacrifice was significant, which was related to negative marital quality.