Anna Case-Winters is Professor of Theology at McCormick  Seminary. She has served the wider church in many  capacities, particularly in ecumenical relations. As Chair for  Christian Unity in the Presbyterian Church (U.S.A.), she  exercised leadership in dialogues with Lutheran, Anglican,  and Roman Catholic communions. Case-Winters has also  served the global church through the work of the World  Communion of Reformed Churches (WCRC) in many  capacities through the years and is currently Moderator for  Mission and Ecumenism. She is the author of God's Power:  Traditional Understandings and Contemporary Challenges,  Reconstructing a Christian Theology of Nature: Down to  Earth, and A Theological Commentary on Matthew.