At the heart of Christian witness is the confession of the triune God. Confessing the Triune God seeks to extend a conversation on Christianity's first article by way of locating Trinitarianism in the life of the worshiping faithful. It does so through an ongoing dialectic between broad and particular confessional lines. Its breadth is constituted by an ongoing assessment of ecumenical consensus and scholarly debates related to Trinitarianism; its repeated framing stems from and returns to the Wesleyan and Methodist family of traditions. In this way, Christian commitments regarding the Trinity can be depicted for their wide appeal as well as their particular logic within a specific worshiping community. The work seeks to guide readers through a process of growing awareness of how the dogma of the Trinity is central to all that Christians say, do, and hope to be. With wit and wisdom, Castelo helps his readers understand the historical development of Trinitarian theology and its purpose--the formation of a people in communion with the God who is communion. Simply put, this is the best Wesleyan account of the doctrine of the Trinity I have ever read. --Edgardo A. Colon-Emeric, Assistant Professor of Theology, Duke Divinity School It is good to see that those standing in the Methodist tradition are once again taking doctrine seriously, as Wesley himself did. Since there is no more important doctrine for the Christian church than the doctrine of God, this book on the Trinity is a must have for the shelves of academics and ministers in the Holiness traditions alike. --Tom Greggs, Professor of Historical and Doctrinal Theology, King's College, University of Aberdeen In this clearly written volume Daniel Castelo provides a rich introduction to the doctrine of the Trinity, showing it to be fundamental to Christian existence. He makes a persuasive case that the central issue is not how we can understand the Trinity but why it actually matters. In this he stands firmly in the tradition of Wesleyan practical divinity. This is a most welcome and useful book for both church and classroom. --Henry H. Knight III, Professor of Wesleyan Studies, Saint Paul School of Theology Daniel Castelo offers a refreshing recovery of the triune God as a way to reconnect Christians in the body of Christ, and to faithfully catechize them in the way of the triune God. Castelo's deceptively insightful work makes it most accessible for everyone in the church seeking to renew their faith and know what it means to confess the triune God. --K. Steve McCormick, Chair for Wesleyan-Holiness Theology and Professor of Historical Theology, Nazarene Theological Seminary Daniel Castelo is Associate Professor of Theology at Seattle Pacific Seminary and University. He is the author of Theological Theodicy (Cascade Books, 2012).