This work argues that the heart of patristic exegesis is the attempt to find the sacramental reality (real presence) of Christ in the Old Testament Scriptures. Leading theologian Hans Boersma discusses numerous sermons and commentaries of the church fathers to show how they regarded Christ as the treasure hidden in the field of the Old Testament and explains that the church today can and should retrieve the sacramental reading of the early church. Combining detailed scholarly insight with clear, compelling prose, this book makes a unique contribution to contemporary interest in theological interpretation.

Arianism has been called the "archetypal Christian heresy" - a denial of the divine status of Christ. In his examination, now augmented by new material, Rowan Williams argues that Arius himself was a dedicated theological conservative whose concern was to defend the free and personal character of the Christian God. His "heresy" grew out of the attempt to unite traditional biblical language with radical philosophical ideas and techiniques, and was, from the start, involved with issues of authority in the church. Thus, the crisis of the early 4th century was not only about the doctrine of God, but also about the relations between emperors, bishops and ascetical "charismatic" teachers in the church's decision-making. Williams raises the wider questions of how heresy is defined and how certain kinds of traditionalism transform themselves into heresy. With a fresh conclusion, in which the author reflects on how his views have changed or remained the same, and a new introduction, this book is suitable reading for students of patristics, doctrine and church history.