In the Nicene Creed Christians profess belief in the Church, "one, holy, catholic, and apostolic." The Church is also called the mystical body of Christ and the bride of Christ. What is the Church and how can we understand her mystery in light of the mystery of Christ? Principles of Catholic Theology, Book 4 explores Catholic ecclesiology and the theology of the Virgin Mary, as an exemplar of the Church's life. It also considers the people of Israel in light of the Church and Christ. The second half of the book considers human nature in light of the grace of Christ, and ecclesial humanity, so...