In recent decades the doctrine of salvation has become a key issue in international ecumenical conversations between Lutherans and Roman Catholics and also between Lutherans and Eastern Orthodox. The 1998 Joint Declaration on Justification between the Vatican and the Lutheran World Federation is a historic milestone in those efforts. Advances in ecumenical conversations have challenged the traditional opinion according to which the Lutheran view of justification by faith has been thought to be opposed to both the Eastern Orthodox doctrine of theosis (deification) and the Roman Catholic view of justification, which also includes sanctification. In One With God Karkkainen points out that amidst all the differences between the East and West with regard to theological orientations and the language and concepts for soteriology, there is a common motif to be found: union with God. Both the Eastern understanding of theosis and the Western idea of justification have union as the ultimate goal. The Unitas Books series seeks to serve the rethinking that is a necessary part of the ecumenical movement. Some books in this series directly address important topics of ecumenical discussion and others chart and analyze the ecumenical movement itself. All are concerned with the Church's unity. The authors are ecumenical experts from a variety of Christian traditions and the books are written for a wide audience of interested clergy and laypeople. This series clarifies, criticizes, and advances reflection concerning the unity of the Church. Chapters are "Salvation in the Union," "Justification in Recent New Testament Scholarship," "Theology," "Deification, Union, and Sanctification in Later ProtestantTheologies," "Salvation as Union: Towards an Ecumenical Convergence," and "One with God: In search of a Consensual View of Salvation."
Taking note of recent developments in Luther studies and building on a historical tracing of the idea of salvation as union in Eastern Orthodox, Catholic, and some Free Church soteriologies, One with God argues that deification and justification do not exclude each other and that the 1999 Joint Declaration between Catholics and Lutherans is a biblically, historically, and theologically sound basis for further talks about salvation.
Taking note of recent developments in Luther studies and building on a historical tracing of the idea of salvation as union in Eastern Orthodox, Catholic, and some Free Church soteriologies, One with God argues that deification and justification do not exclude each other and that the 1999 Joint Declaration between Catholics and Lutherans is a biblically, historically, and theologically sound basis for further talks about salvation.