Daniel Yang is the director of the Church Multiplication Institute at the Wheaton College Billy Graham Center, a think tank for evangelism and church planting. He has pastored and helped plant churches in Detroit, Dallas-Fort Worth, Toronto, and Chicago. He earned an MDiv from Southwestern Baptist Theological Seminary, a BS in computer science from the University of Michigan, and is currently a PhD student in intercultural studies at Trinity Evangelical Divinity School. Eric Costanzo (PhD) is a pastor and teacher from Tulsa, Oklahoma, who writes about biblical, cultural, and historical topics along with global issues affecting the church. Eric is executive director for RisingVillage.org, an organization with initiatives to help marginalized people become full participants in their communities. He is also the author of Harbor for the Poor. Eric and his wife, Rebecca, have four children who have wonderfully compassionate hearts for others. Matthew Soerens is the US director of church mobilization and advocacy for World Relief and the national coordinator of the Evangelical Immigration Table. Previously Matthew served as a Department of Justice–accredited legal counselor with World Relief's local office in Wheaton, Illinois. He is the coauthor of Welcoming the Stranger and Seeking Refuge.