Bavarian theologian Johann Auer (1910-1989) presents an understanding of the nature of the Church that is relevant for our time. Central to his discussion is the Vatican II concept of the Catholic Church as the universal sacrament of salvation. Firmly grounding his commentary in Scripture and in the history of doctrine, Auer clearly outlines the meaning of the Church's sacramental nature. He addresses the problems of apostolic succession and the infallibility of the pope, and considers the Church's tasks in the modern world and its relationship to those important elements in our society--the state, the economy, art, science--that impinge upon our everyday lives.