Steven Waldman co-founded and served as editor-in-chief of Beliefnet before becoming senior adviser to the chairman of the Federal Communications Commission. He is the author of Founding Faith: How Our Founding Fathers Forged a Radical New Approach to Religious Liberty.

John Fea is an American history professor at Messiah College in Grantham, Pennsylvania. Fea writes often about the role of religious leaders in the Trump administration and is the author of Believe Me: The Evangelical Road to Donald Trump.

Warren Throckmorton is associate professor of psychology at Grove City College, a Christian liberal arts school in Pennsylvania, and co-author of Getting Jefferson Right: Fact Checking Claims About Our Third President (2012).

Stephen Mansfield is the author of numerous books on religion and the presidency, including The Faith of Barack Obama and The Faith of George W. Bush. He has also written about the faith of other leaders, including Winston Churchill and Abraham Lincoln.

Felipe Mesa has just started a house church in Taneytown, Md.

Jared Looney is a church planter involved in house churches in the Bronx, N.Y. He is part of MetroSoul, a cooperative organization of church organizations and church planters working to plant simple churches throughout the New York metropolitan area. He blogs at Urban Ekklesia.

Robert Fitts is a church planter and author of The Church in the House: A Return to Simplicity (Preparing the Way Publishers, 2001). He lives in Kailua-Kona, Hawaii.

Frank Viola is the founder of Present Testimony Ministry and the author of several books on house churches. He lives in Gainesville, Fla.

Bill Tenny-Brittian writes for the House Church Network Association. He says people say they join house churches for reasons of intimacy, the ability to participate more fully and the level of discipleship opportunities.