"No subject is of greater importance for the Christian life than union with Christ. In bringing this to the fore once more, Dr. Letham reminds us of this truth and shows how it underpins every other aspect of our salvation. This is a stimulating work that all pastors and students should read and absorb into their preaching and teaching ministry."
- Gerald Bray, Research Professor of Divinity, Beeson Divinity School, Samford University, Birmingham, AL

“Letham has established himself over the years as a first-class expositor of key themes in the Reformed faith. This outstanding book goes to the heart of the truth of salvation with deep learning, acumen, and pastoral wisdom. Highly recommended.”
- J. I. Packer, Professor of Theology, Regent College, Vancouver, British Columbia

“Robert Letham’s Union with Christ is profound yet luminous scholarship. He writes as a student of the Scriptures, a son of the church, and a servant of mankind, and so in his book we find a happy confluence of biblical exposition, systematic theology, historical theology, and real-life illustrations. He draws on the treasuries of the church from Cyril of Alexandria and Athanasius to Calvin and the Puritans and onward to Herman Bavinck. Best of all, he expounds one of the Bible’s most delightful, mysterious, and important topics: Christ in us, the hope of glory.”
- Joel R. Beeke, President, Puritan Reformed Theological Seminary, Grand Rapids

"This is an important work on an important and timely topic vital to the church’s understanding of the salvation we have in Christ. It is also a topic that has become increasingly controversial in recent years, and Letham’s work serves as an instructive guide these debates. His insightful treatments of the soteriological significance of the incarnate humanity of Christ and sacramental efficacy provide needed correctives to some recent Reformed discussions, and the expansion of dialogue to include patristic sources, the Eastern Christian tradition, and more recent theologians such as T. F. Torrance lends a genuinely ecumenical flavor to the book."
- William B. Evans, Younts Prof. of Bible and Religion Erskine College, Due West, South Carolina

We have come to expect high-quality contributions on important theological topics from Dr. Letham. This volume is no exception. Recent decades have witnessed a resurgence of attention to union with Christ. Most of these studies have a relatively narrow focus -- on the views of key individuals or particular periods or on specific doctrinal issues, especially the relationship of union and justification. Letham undertakes, quite effectively, to supplement and in some cases correct current discussions by putting them in a much-needed comprehensive context, beginning with grounding the treatment of union in the doctrines of the Trinity and creation. Of particular interest to many readers will be his effort, in light of a passage like 2 Peter 1:4, to show the harmony there is between the understanding of union with Christ as it has developed within Protestant theology and the Eastern Orthodox view of the?sis (“deification”) in its most biblically sound exponents. One need not agree with the author at every point to benefit from the uniformly valuable instruction this important book provides."
- Richard B. Gaffin, Jr., Professor of Biblical and Systematic Theology, Emeritus, Westminster Theological Seminary (Philadelphia)