Dr. Allen Yeh is Associate Professor of Intercultural Studies and Missiology at Biola University near Los Angeles. He is the author of numerous journal articles and book chapters, as well as co-author, with Mark Russell, Chelle Stearns, Dwight Friesen, and Michelle Sanchez, of Routes and Radishes and Things to Talk About at the Evangelical Crossroads (Zondervan, 2010); co-editor, with Chris Chun, of Expect Great Things, Attempt Great Things: William Carey & Adoniram Judson, Missionary Pioneers (Wipf & Stock, 2013); and author of Polycentric Missiology: 21st-Century Mission from Everyone to Everywhere (IVP Academic, 2016).