Founders

William R. Green is the co-founder and Chief Executive Officer of the Equip Institute, bringing over two decades of vocational experience in overseas ministry, church planting, pastoring, and teaching in theological higher education. He holds an M.T.S. from Harvard University, an M.Phil. from the University of Pennsylvania, an M.A. in Theology and an M.A. in Intercultural Studies from Grace Theological Seminary, and a B.S. in Biblical Studies and Christian Ministries from Grace College. He is currently completing a PhD in Intercultural Studies (Missiology) at Trinity Evangelical Divinity School, with expected completion in May 2026. He serves as an Affiliate Professor at Kairos University, Associate Editor of Missiology: An International Review, and Parallel Session Coordinator for the American Society of Missiology.

Joanna Green is an educator and organizational leader with more than a decade of overseas mission experience. She is a licensed educator in the United States and has over two decades of teaching experience across diverse academic and cross-cultural contexts. Her senior leadership roles include serving as Distance Education Director and Vice President of Academics at Pacific Islands University. She serves as the co-founder and Chief Operating Officer of the Equip Institute and is an Affiliate Professor at Kairos University. Joanna holds a PhD in Intercultural Education from Biola University, an M.A. in Nonprofit Management from Johns Hopkins University, an M.Ed. from Colorado State University, an M.A. in Intercultural Studies from Grace Theological Seminary, and a B.A. in Communications from Grace College.

Advisory Board Members

The Equip Institute does not publicly disclose the identities of certain board and advisory board members due to security considerations associated with the countries and contexts in which we work.

David M. Gustafson is Professor of Evangelism and Missional Ministry at Trinity Evangelical Divinity School (TEDS) in Deerfield, Illinois, where he chairs the Evangelism and Missional Ministry Department and teaches courses on evangelism, missional praxis, and church history. He is a prolific author and previously served for 25 years in ministry, including as campus director with Cru at Fresno State University, pastor in two Evangelical Free Church of America congregations, and an instructor at the University of Houston and Houston Graduate School of Theology. An ordained minister in the Evangelical Free Church of America, he serves on its Board of Ministerial Standing, as affiliate docent at Johannelund School of Theology in Sweden, and as book review editor for Witness: Journal of the Academy for Evangelism in Theological Education. He holds a Ph.D. from Linköping University in Sweden, a D.Min. from Fuller Theological Seminary, a Th.M. and M.Div. from TEDS, and a B.B. from Western Illinois University.

Jacob Olupona is Professor of African Religious Traditions at Harvard Divinity School, Harvard University, with a joint appointment in African and African American Studies in Harvard University’s Faculty of Arts and Sciences, where he previously served as department chair. He is a distinguished scholar whose work has been widely recognized for its intellectual and public impact. He was elected to the American Academy of Arts and Sciences in 2023 and received the Nigerian National Order of Merit in 2007, the country’s highest intellectual honor. He holds a Ph.D. from Boston University and honorary doctorates from the University of Edinburgh, Obafemi Awolowo University, and the University of Abuja. He received the Martin E. Marty Award for the Public Understanding of Religion in 2018. His research has been supported by major grants from the Guggenheim, Ford, Wenner-Gren, and Rockefeller Foundations, and he has served as president of the African Association for the Study of Religion and on the editorial boards of leading journals.

Andrew Royer is the President of Ethnos360 Bible Institute (formerly New Tribes Bible Institute) in Waukesha, Wisconsin, where he provides institutional leadership in the theological and practical formation of missionaries serving among Unreached People Groups. Andrew was raised in Brazil as a missionary kid, served for ten years as a pastor in the United States within the Charis Fellowship of churches, and then returned to Brazil with his wife to serve as missionaries. In addition to his administrative leadership, Andrew remains actively involved in teaching at Ethnos360 Bible Institute and has previously taught at Instituto Bíblico Peniel in Brazil. He holds a Master of Divinity degree from Grace Theological Seminary and a Bachelor of Science in Biblical Studies from Grace College.

Mihamm Kim-Rauchholz served as Professor of New Testament and Greek at the International University of Liebenzell from 2011 to 2023 and has lectured at various universities and seminaries around the world. Previously, she served as President of Pacific Islands University in Guam and as Head of the Oceania Department for the Liebenzeller Mission. Since 2023, she has served as Theological Advisor to the Liebenzell Mission, providing theological leadership and strategic counsel for ministry in Germany and internationally. She is a member of the Board of Trustees at the International University of Liebenzell; serves on the advisory board of the theological journal Theologische Beiträge; is a member of the steering group of Mission:is:possible; serves on the advisory team supporting the International Leadership Team of the Liebenzeller Mission; sits on the Theological Advisory Board of ERF, the German Christian Broadcasting Network; and is a frequent keynote speaker at major conferences and Christian events. She holds a Dr. theol. in theology from the University of Tübingen.

Juan Carlos Téllez is Assistant Professor of Intercultural Studies and Associate Chair of the Department of Christian Ministries at the University of Northwestern, St. Paul. MN. He holds a Ph.D. in Intercultural Studies from Trinity Evangelical Divinity School, an M.Div., and an M.A. in Intercultural Studies from Grace Theological Seminary, and a degree in church planting from the Sembrar Institute in Bogotá, Colombia. Téllez’s teaching and research focus on intercultural competence, immigration, the multiethnic church, and global Christianity, with particular attention to the intersections of theology, culture, and ministry practice. Born and raised in Bogotá, Colombia, he has extensive pastoral and cross-cultural ministry experience in Latin America and the United States, including church planting, pastoral leadership, and ministry within immigrant and multiethnic congregations.

Yousaf Sadiq is an Adjunct Assistant Professor at Wheaton College and also serves as a Senior Fellow at the Wheaton College Humanitarian and Disaster Institute. His teaching and research focus on the intersection of theology, culture, and global Christianity, with an emphasis on the persecuted church, South Asian Christianity, contextual expressions of the Christian faith, and the Punjabi Psalter. In addition, Sadiq serves as President of the Punjabi Psalter Society, is global co-leader of the Lausanne Initiative for the Persecuted Church within the Lausanne Movement, and is active in professional societies. He brings extensive expertise and long-standing engagement with Christian communities living under social and religious pressure in Pakistan and the wider South Asian context. He holds a Ph.D. in Historical Theology from the London School of Theology, a B.A. (Hons) in Theology from the same institution, and a Diploma in Linguistics from the Institute of Linguistics in Pakistan.