David Daniels, a professor at McCormick Theological Seminary in Chicago, is an expert in African Pentecostalism.

Cecil M. “Mel” Robeck Jr. is a professor of church history and ecumenics and director of the David J. DuPlessis Center for Christian Spirituality at Fuller Theological Seminary in Pasadena, Calif. Robeck is a leading scholar and commentator on Pentecostalism and author of The Azusa Street Mission and Revival, (Thomas Nelson Publishers, 2006).

Robin D. Perrin, professor of sociology at Pepperdine University in Malibu, Calif. Specializes in sociology of religion. Has written numerous articles on religion including “Examining the Sources of Conservative Church Growth: Where are the New Evangelical Movements Getting Their Numbers?” for the Journal for the Scientific Study of Religion in 1997.

Rodney Harrison is vice president for institutional effectiveness, dean of online education, director of doctoral studies and associate professor of Christian education at Midwestern Baptist Theological Seminary in Kansas City, Mo. He is a veteran church planter, having started churches in Minnesota, California and the Dakotas.

Donald A. Luidens, professor of sociology at Hope College in Holland, Mich. (affiliated with the Reformed Church in America), has followed the evolution of denominations and denominationalism in the U.S.

Daniel V. A. Olson, associate professor of sociology at Purdue Univeristy. Specializes in sociology of religion and has written about church growth.

Mark Perakh is a professor emeritus of physics at California State University, Fullerton. He is author of Unintelligent Design (Prometheus Books, 2004).

John Schneeberger is with the Bitterroot Human Alliance in Hamilton, Mont., and advocated against the inclusion of intelligent design in Darby public schools.

John Mark Reynolds is the president of The Saint Constantine School. Dr. Reynolds is a senior fellow of humanities at The King’s College in New York City. He is also a fellow at the Discovery Institute’s Center for Science and Culture. He was also the founder and director of the Torrey Honors Institute.