Matthew Vines is a gay evangelical Christian activist who works for full inclusion of LGBT people in the Christian church. He is the author of God and the Gay Christian. Vines is based in Wichita, Kan. Contact through Helena Brantley.

Todd W. Hall is a professor of psychology at Biola University in La Mirada, Calif., and director of the Institute for Research on Psychology and Spirituality. He is co-author of Psychology in the Spirit: Contours of a Transformational Psychology.

Amy Gilbert is chair of the graduate department of counseling at Grace College and Theological Seminary in Winona Lake, Ind., where she teaches in the master of arts in clinical mental health counseling program.

is a Christian blogger who has written widely about her own struggles with mental illness, including suicidal thoughts. She runs WondHerful.net, an inspirational blog for Christian women with similar struggles. She is based in Coral Gables, Fla.

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.

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.

Owen Strachan is an assistant professor of Christian theology and church history at The Southern Baptist Theological Seminary and Boyce College in Louisville, Ky. as well as president of the Council on Biblical Manhood & Womanhood. He writes Thoughtblog, a blog about Christian theology, politics and culture.

Rick McDaniel is a Christian speaker, author and leader of Richmond Community Church in Richmond, Va. In September 2013, he wrote a column for Fox News challenging the idea that one cannot be a good Christian and still love football.

Atletas de Cristo, or Athletes for Christ, is a Brazil-based international organization of Christian — usually Pentecostal and evangelical — athletes. Its purpose is to “bring the Gospel to the world through the athlete.” Brazilian soccer players have been known to flout FIFA’s rules against proselytizing via clothing at games.