A native of England, he was educated at Oxford University, (M.A.), Eden Theological Seminary, St. Louis, Missouri (M.Div.), and Duke University, Durham, North Carolina (Ph.D.). He has pastored inner city and rural congregations in Illinois and North Carolina, and has served as Executive Secretary for Covenant Discipleship and Christian Formation at the General Board of Discipleship of The United Methodist Church. He has taught at Southern Methodist University as the McCreless Professor of Evangelism at Perkins School of Theology, and at Wesley Theological Seminary in Washington, D.C. as Professor of Theology and Congregational Life and Mission.

He has written extensively in the fields of Methodist history and theology, evangelism, and congregational life and mission. His books include The Early Methodist Class Meeting, and God Does Not Foreclose. He has also written curriculum resources for The United Methodist Church, including the New Testament studies in Troublesome Bible Passages. He was the founding editor of the Covenant Discipleship Quarterly and the Journal of the Academy for Evangelism in Theological Education, of which he is a past President. He has served on the Board of Directors of the Bicentennial Edition of The Works of John Wesley and is presently a member of the Board of Directors of Eden Theological Seminary.