The Authority of the Gospel: Explorations in Moral and Political Theology in Honor of Oliver O'Donovan. Edited by Robert Song and Brent Waters. Grand Rapids, Mich.: Eerdmans Publishing, 2015. xxi + 294 pp. $45.00 (cloth).In his foreword to this festschrift Rowan Williams describes Oliver O'Donovan as of the most serious thinkers the Anglican family has nurtured in the last century or so (p. viii). Although Reinhold Niebuhr and Stanley Hauerwas may have had wider general influence, if one considers the field of Christian ethics, then in terms of erudition in scholarly languages, theological insight, historical engagement, and the sheer range of issues of concern to which O'Donovan brings his illuminating analysis, he is without peer.This festschrift is reflective of the broad range of O'Donovan s interests: political theology, of course (historical and contemporary), ethical theory (practical reason, natural law, virtues), detailed engagement with the application of moral principles in complex situations (for example, just war), and the life of the Christian in the world and in the church (preaching and liturgy).There are several essays on the intersection of church and world, of public and private morality, an area where the insights of Augustine are still bearing fruit. Eric Gregory has a fine essay on the civic virtues. Brian Brock has a helpful essay on What Is ?the Public'?, interacting with Augustine, O'Donovan, and Bonhoeffer and reflecting, for example, on the misguided French authorities banning forms of Muslim dress in public on the basis of false universals. Jonathan Chaplin also deals with the challenge of pluralism in modern society, and how governments can make judgments about controversial issues in the context of a variety of fundamental moral and religious convictions. The complexity and diversity of the world itself should be reflected in the complexity of such judgments.Christian character and moral virtue, supported by sound theology, is foundational to the effective witness of the church in the world. In fact, the festschrift underscores this point by bracketing the entire collection with treatments of Christian love: in the first essay Bernd Wannenwetsch explores the dialectic of faith and love in Augustine and Luther. And in the final essay we have O'Donovan himself returning to the theme of self-love, its degeneration to material self-interest, and the problems with modern notions of equality.The virtue of prudence is in large part a form of seeing things correctly (as well as making good judgments), and Hans Ulrich brings Old and New Testament material to bear on the importance of discernment. The late John Webster has a very helpful analysis of the role of sorrow in the Christian life, largely based on interaction with Thomas Aquinas.Moving from the Christian individual to corporate life in the church, we have Shinji Kayama and Joan O'Donovan. Kayama, a pastor in Yokohama, Japan, writes on preaching as moral pedagogy, drawing lessons from the different (and sometimes questionable) ways in which Augustine dealt with the challenge of re-incorporating the Donatists in the Catholic Church, and how he developed the central concept of pax ordinata. There are many valuable insights in Joan O'Donovan's reminder of the Tudor reformers' theological intentions in framing the Anglican liturgies, such as this part of her conclusion: Only the eschatological renewal of human moral agency and action through the church's practice of proclamation, centred in her common worship, can overcome the tyranny of the law . …