Dr. Sim received his doctorate (Ph.D.) in Kierkegaard Studies from Korea University and his Th.D. in Community Ecclesiology from Chongshin University before conducting postdoctoral (Pos-Doc.) research at the Hebrew University of Jerusalem, Israel, on a government-funded fellowship. At the Institute for Jewish Identity at the Hebrew University, he researched the topic of Jewish religious community and identity, and as a result, established a theory of identity education based on biblical community ecclesiology and Christian spirituality. In addition to his longstanding ecclesiological research and practice, he has continued his philosophical research and lectures on culture and education, for which he has received two Distinguished Lecture Awards from Korea University. For 25 years, he served as the director of the Pastoral Leadership Institute and senior vice pastor at the Global Mission Church, proving his capacity for practical ministry. He has served as a professor at Baekseok University's Practical Theological Seminary and Midwestern Baptist Theological Seminary in the U.S. He is currently the director of the Korean Theology Program at Talbot School of Theology, where he is committed to cultivating the soil of conservative evangelicalism in Korea.