Gregg R. Allison (PhD, Trinity Evangelical Divinity School) is professor of Christian theology at The Southern Baptist Theological Seminary. He is the author of many books, including 50 Core Truths of the Christian Faith, The Baker Compact Dictionary of Theological Terms, Historical Theology: An Introduction to Christian Doctrine, and Sojourners and Strangers: The Doctrine of the Church. He serves as secretary of the Evangelical Theological Society and is a book review editor for the Journal of the Evangelical Theological Society. Gregg is also a pastor of Sojourn Community Church.