Union with Christ

Union with Christ: The Blessings of Being in Him explores the New Testament doctrine of the believer’s union with Christ, examining what it means to be “in Christ” and how this reality shapes every dimension of the Christian life.

Dr. Sinclair B. Ferguson approaches the subject by reflecting on specific key passages in the New Testament rather than treating union with Christ as a topic in systematic theology. This expositional method anchors the reader’s understanding in particular texts—drawn primarily from Ephesians, Romans, Galatians, Colossians, and John—allowing the doctrine to unfold in its biblical contexts. Ferguson describes the book as an introduction intended to serve as a catalyst for a lifetime of reflection on this pervasive biblical theme.

Through careful exposition, Ferguson traces the blessings that belong to believers in Christ—including justification, redemption, adoption, and reconciliation—and shows how these facets of salvation cohere within the framework of union with Christ. He addresses the tension between the “already” and the “not yet” in the believer’s experience, the dual work of mortification and vivification in sanctification, and the role of the Holy Spirit in uniting believers both to Christ and to one another. The book also considers how union with Christ shapes the believer’s identity, spiritual warfare, and pursuit of Christlike character.

Key Themes

• The believer’s identity as grounded in union with Christ rather than self-construction
• Justification, redemption, adoption, and reconciliation as dimensions of life “in Christ”
• The relationship between mortification of sin and cultivation of Christlike graces
• The “already and not yet” tension in the Christian’s ongoing struggle with sin

Featured Quotes

“We have already died to sin, but sin has not yet died in us.”

“We find fullness not by adding to Christ but by appreciating what we already have in Christ.”