Gain immediate access to concise, accurate definitions of theological terms from “Abba” to “Zwinglianism,” written by two of today’s top Catholic theologians. In this third edition of A Concise Dictionary of Theology, Gerald O’Collins and Edward G. Farrugia identify 1,000 terms, providing necessary information about their origin, and their place in church history. This is not an edited work, rather, each entry is written by O’Collins and Farrugia, giving it a fresh, accessible tone that sets it apart traditional dictionaries.

Our largest package, the 2025 Ultimate Library, provides an incredible library for biblical research and theological reflection. Whether focused on Church history or biblical exegesis, the vast collection of resources and titles at your fingertips cover the gamut—from most devotionals to practical discussions of pastoral ministry to the most rigorous scholarly and academic research. This package has everything you need to engage in the serious study of Scripture and its world, with respected resources like the Library of Hebrew Bible/Old Testament Studies | LHBOTS (382 vols.) and top-tier exegetical commentaries like the New International Commentary on the Old and New Testament | NIC (51 vols.).

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