Tremendous book to help people, Catholic and non-Catholic alike, understand the nature of the traditional sacraments. The communication of what constitutes a sacrament, why the Catholic and Orthodox churches hold to seven, and specifically how graces are conferred by God through sacraments are at the heart of this book. Additionally these sacraments are considered in light of the different documents of the Second Vatican Council. All in all it is a good read to understand where Catholic theology is generically, and to begin to grasp where it is sacramentally. This book is also good for those of non-sacramental traditions to take a first step into sacramental theology, at least to understand it.