Letitia Campbell is an assistant professor of ethics at Emory University’s Candler School of Theology in Atlanta, where she also coordinates the Laney Legacy Program in moral leadership and the clinical pastoral education program. She studies Christian evangelization, especially in short mission trips, and helps run a Facebook group on virtual ministry tools.

Jim Winkler is president and general secretary of the National Council of Churches of Christ in the USA, an organization that represents 37 religious denominations. He is based in Washington, D.C.

Amy Reynolds is an assistant professor of sociology at Wheaton College in Wheaton, Ill. She is an expert on globalization, women in leadership in the Christian world and gender studies, and she is researching women in leadership within evangelical organizations. Reynolds is the author of Free Trade and Faithful Globalization: Saving the Market.

Read a July 13, 2014, blog post from the Association of Religion Data Archives about a research study that found inclusion and support for families with special-needs kids lacking in many congregations.

David E. Prince is an assistant professor of Christian Teaching at the Southern Baptist Theological Seminary in Louisville, Ky. and pastor at Ashland Avenue Baptist Church in Lexington, Ky.

Peter Althouse is an associate professor of religion at Southeastern University in Lakeland, Fla. He is an expert on Pentecostalism and charismatic renewal and has studied the growth of both in Canada.

Kenneth Archer is a professor of Pentecostal theology and Christian studies at Southeastern University in Lakeland, Fla. He is also the president of the Society for Pentecostal Studies.

Sohaib N. Sultan is Muslim life coordinator and chaplain at Princeton University. In July 2014, as part of a series of Ramadan reflections for Time, he wrote about why Muslims should avoid food waste.