Veli-Matti Kärkkäinen is professor of systematic theology at Fuller Theological Seminary in Pasadena, California. He has published numerous articles in international journals of theology. His books include Pneumatology (Baker), Christology (Baker), Toward a Pneumatological Theology (UPA), An Introduction to Ecclesiology (InterVarsity Press), Trinity and Religious Pluralism (Ashgate), The Doctrine of God (Baker) and One with God (Liturgical Press).