Robert A. Peterson is a retired systematic theologian who has written or edited 35 books. He is associate pastor at Covenant of Grace Church in St. Charles, MO and teaches in Ukraine via Zoom for RITE.

The doctrine of believers' union with Christ has undergone a renaissance in recent years. Evangelicals are rightly fascinated by this previously neglected doctrine - a doctrine with wide-ranging implications for the whole of Christian theology and the Christian life. Drawing on his extensive teaching and research experience, theologian Robert Peterson has written one of the most comprehensive theological treatments of union with Christ to date, highlighting the Spirit's crucial role in uniting God to his people.