Jack Gibbs is media coordinator for Crown Financial Ministries, a global ministry based in Gainesville, Ga., that teaches a Christian and Bible-based money management system. The group does not stress personal wealth and prosperity but focuses on responsible stewardship. Contact via the website. 

Ole Anthony is founder of the Trinity Foundation, a televangelist watchdog organization that has helped uncover questionable, and sometimes criminal, financial practices of television preachers. Trinity maintains a Web page that reports on the activities of various prosperity gospel preachers. 

The Rev. John Sewell is rector of St. John’s Episcopal Church in Memphis, Tenn.

Roy Heller is a professor of Old Testament at Perkins School of Theology at Southern Methodist University in Dallas and focuses on the use of the Bible in ethics and theology.

Dennis E. Smith teaches New Testament at Phillips Theological Seminary in Tulsa, Okla., and is a fellow of the Westar Institute, which studies Jesus and early Christianity. He can speak about the role of Mary in the New Testament from a Protestant perspective.

Susan J. White is the Alberta H. and Harold L. Lunger Professor of Spiritual Resources and Disciplines at Brite Divinity School at Texas Christian University in Fort Worth, Texas. She is also author of A History of Women in Christian Worship (Pilgrim Press, 2003).

John Martin is a professor of history at Trinity University in San Antonio, Texas, professor-in-residence at Duke University and the representative for church history for the Renaissance Society of America.

Greg Jones is rector of St. Michael’s Episcopal Church in Raleigh, N.C., a regular contributor to news outlets and journals and author of Beyond Da Vinci (Seabury Books, 2004), a response the theological andhistorical inaccuracies he sees in “The Da Vinci Code.”

Leo Sandon is professor emeritus of religion and American studies at Florida State University and is a co-author of Religion in America (Prentice Hall, 1982).