Don Thorsen, Ph.D. (Drew University), is Professor of Theology and Chair of the Graduate Department of Religion and Ethics in the Azusa Pacific Graduate School of Theology at Azusa Pacific University. He served as President of the Wesleyan Theological Society. The original article for Chapter 1 by Don Thorsen was entitled “Holiness Manifesto: An Ecumenical Document.” It appeared in the Wesleyan Theological Journal, vol. 42:2 (2007). Used by permission. The original article for Chapter 9 by Don Thorsen was entitled “Ecumenism, Spirituality, and Holiness: Wesley and the Variety of Christian Spiritualities.” It appeared in the Wesleyan Theological Journal, vol. 41:1 (2006). Used by permission. Dr. Thorsen is co-editor of this present volume.