Lois McKinney Douglas (PhD, Michigan State University) is professor emerita of mission at Trinity Evangelical Divinity School. She served as a missionary for twenty-three years with the Conservative Baptist Foreign Mission Society.
Tom Steffen is professor of intercultural studies at Biola University in La Mirada, California, where he directs the Doctor of Missiology program. He was a missionary to the Philippines for fifteen years, and he is the author of a number of books on missions and crosscultural ministry.