If society and churches are in crisis, it may be because we are losing our ability to keep our promises. Scott Hahn restores the connection between sacred words and human action, promises and commitment. Scott Hahn argues that every society - be it nation, neighbourhood, family or Church - is held together by the power of personal commitments. When we really want to change our lives, when we want to make love endure, we mark the transition by an oath. The words we say bind us to a course of action. But the most powerful oaths of all are those that mark the Christian sacraments. In Swear to God, Hahn restores the connection between sacred words and human action, promises and commitment.