Gregg R. Allison (PhD, Trinity Evangelical Divinity School) is professor of Christian theology at The Southern Baptist Theological Seminary. He is secretary of the Evangelical Theological Society, a book review editor for the Journal of the Evangelical Theological Society, an elder at Sojourn Community Church, and a theological strategist for Sojourn Network. Allison has taught at several colleges and seminaries, including Western Seminary in Portland, Oregon, and Trinity Evangelical Divinity School in Deerfield, Illinois, and is the author of numerous books, including Historical Theology: An Introduction to Christian Doctrine, Sojourners and Strangers: The Doctrine of the Church, and Roman Catholic Theology and Practice: An Evangelical Assessment.