Reviewed by: Dogma and Ecumenism: Vatican II and Karl Barth's Ad Limina Apostolorum ed. by Matthew Levering, Bruce L. McCormack, and Thomas Joseph White, O.P. Gavin D'Costa Dogma and Ecumenism: Vatican II and Karl Barth's Ad Limina Apostolorum edited by Matthew Levering, Bruce L. McCormack, and Thomas Joseph White, O.P. (Washington, DC: Catholic University Press of America Press, 2020), ix + 369 pp. In May 1966 Karl Barth visited Rome. He was invited to reflect on the Second Vatican Council, to ask questions to leading curial figures, and peritus theologians, as well as Pope Paul VI. Barth's book Ad Limina Apostolorum: An Appraisal of Vatican II contains his questions and an account from Barth of his visit, along with some other important essays. It is still deeply challenging in its incisiveness, despite its brevity. I have always been struck by Barth's Marian criticisms that are so central to his viewpoint about divine agency and human cooperation. These give us an excellent insight into his ecclesiology. They represent the reasons for much of his questioning of various Roman Catholic positions on all sorts of matters. Eberhard Busch's diaries, while Barth's assistant during this period, form a fascinating complimentary account of the visit. These tell of the not-so-fruitful visit to Augustin Cardinal Bea and the great highpoint (for Barth) of his one-hour audience with Pope Paul VI. Barth was impressed by the Jesuits during his visit, but not so much by the Dominicans. He thought the latter had absorbed too many streams of liberal modernity. The two Dominicans participating in this book turn those tides. Indeed, all the authors could be located within the conserving wings of their ecclesial membership, which makes the volume all the stronger in raising serious unresolved disagreements and noting important common ground. It is testimony to Barth's enduring value that this volume seems so timely. The Barth Centre at Princeton and the Pontifical Faculty of the Dominican House in Washington were the sponsors of this collection. The volume is structured around five of the key documents commented on by Barth, with a Catholic and Reformed voice reflecting on both the particular document and Barth's input (with the exception of Francesca Aran Murphy, who deals with George Lindbeck rather than Barth), thereby simultaneously pushing forward the Catholic–Reformed engagement with the Council and with Barth. There is a preface with a penetrating introduction by Thomas Joseph White, O.P., and an irenic opening chapter by Matthew Levering on biblical renewal at Vatican II. Then follow the twin reflections on the five documents. First (and rightly so) comes the Dogmatic Constitution on Revelation, Dei Verbum. Katherine Sonderegger develops a nuanced reflection on the metaphor of Scripture as mirror of God (found in Dei Verbum), showing [End Page 971] a deep appreciation of currents within Dei Verbum that Barth had not detected, but which are more connective with his concerns and preoccupations. Lewis Ayres rather impishly takes what Barth saw as the main weakness of the text (its chapter 2: "Handing on Divine Revelation") and makes it the greatest strength. Ayers provides a deeply learned and original exploration of the concept of "tradition" as sacramental. In this duet, Barth comes out looking like he may have missed hearing the melodies while too closely studying the score. Then follow two profound essays on Lumen Gentium, the Dogmatic Constitution on the Church. Christoph Schwöbel builds up a strong Protestant case for the necessary visible ecclesial identity of the Church, thus showing a deep convergence without denying differences that remain. White, in a deeply insightful and probing essay, goes to the heart of the ecclesiological difference between Barth and Yves Congar (and some other key Catholics at the time): the relationship between uncreated divine agency and created human agency, especially within the context of the post-apostolic Church. White suggests that, without some stable ecclesial mediations, there can be no proper relationship envisaged between the transcendent causality of God operating in Christ and the created, active cooperative acts with this grace. While building up both a metaphysical and a theological case against Barth's criticisms...