Verbum’s Catholic Topical Index is a topically-organized index of references from Sacred Scripture, Catholic Church teaching and the writings of Church Fathers, saints and significant theologians from the history of the Church. With Verbum’s linking and reference searching ability, the Catholic Topical Index lets you quickly go to the sources and trace the development of Catholic doctrine through the centuries or, from any given reference in Scripture or the tradition, broaden your study through related topics.