John was born and raised in Malaysia. He completed his ThM and PhD from Trinity Evangelical Divinity School (Deerfield, IL) and serves as the course lead for intercultural studies at GCU. He spent over a decade in missions in Southeast Asia in evangelism, discipleship and teaching in two seminaries, researched and published many writings on the intersection of the social sciences, theology and missiology as well as a consultant for churches and mission agency workers in missions. His academic interests range from World Christianity, contextual theology in discipleship, the anthropology and sociology of globalization, Pentecostalism and Islam, missionary elenctics, ethnicity and identity in missions, money and mission, Asian spiritual warfare, trinitarian and diaspora missiology, and urban missions. He is married with three daughters and lives in Phoenix, AZ.