Since 1989, So has been involved in researching the restoration of the historical Jesus' sayings. He also belongs to the International Q project of the Society of Biblical Literature (SBL).[4] He is the co-editor of the Critical Edition of Q source. He published Jesus in Q: The Sabbath and Theology of the Bible and Extracanonical Texts,[5] a study of the relationship between the Sabbath and the theology of Jesus in 2017. He published the book on Ernst Fuchs and Gerhard Ebelling in 2006.[6]
He is now the head of the Jesus Sayings Hub in Korea,[7] the president of the Society of Korean Q Studies, and the secretary of the Korea Reformed Theological Society 한국개혁신학회 [ko]. It is the preparation committee for the 500th anniversary of the Reformation.
Publications
Thesis
So, Ky-Chun (1999). The Sabbath Controversy of Jesus: between Jewish law and the Gentile mission (Ph.D.). Claremont, CA: Claremont Graduate University. OCLC40550247.
Books
——— (2006). 훅스 & 에벨링 Fuchs & Ebeling: History of Hermeneutics and New Hermeneutics. Seoul: Salim Publishing House.
——— (2017). Jesus in Q: The Sabbath and Theology of the Bible and Extracanonical Texts. Eugene, OR: Wipf & Stock. ISBN9781498282116. OCLC973291702.
Journal articles
——— (2000). "Jesus' Understanding of Spirit". Korean Journal of Theology. 2: 52–69.
——— (May 2001). "Jewish Influences on Gnosticism in the Apocalypse of Adam". Presbyterian Journal of Theology. 1 (1): 49–74.
——— (May 2002). "A Tradition-History Development of the Meals". Korean Presbyterian Journal of Theology. 2: 33–47.
——— (Autumn 2002). "The Eschatology of the Q Community". Korean New Testament Studies: Journal of the New Testament Society of Theology. 9 (3): 619–636.
——— (May 2003). "Dating Q Regarding to the Community Rules in Jesus' Inaugural Sermon". Korean Presbyterian Journal of Theology. 3: 32–65.
——— (December 2003). "Jewish Mission and Gentile Mission in the New Testament". Mission and Theology. 12: 350–365.
——— (May 2005). "The God of Jesus, the Q Community, and the Gospel of Luke". Korean Presbyterian Journal of Theology. 5: 9–27.
——— (2006). "The Sabbath and the Synoptic Problem". Theological Forum. 43 (2): 767–782.
——— (May 2006). "Christological Insights: Between the Psalms of Solomon and the Sayings Gospel Q (1)". Korean Presbyterian Journal of Theology. 6: 31–54.
——— (2007). "A Theological and Anthropological Understanding of Creation: on Focus of Genesis 1-2". Deep Word Clear Teaching: A Paper on the Commencement of Retirement of Professor Cheong Hoon Kang. Seoul: Written in the Land: 414–427. {{cite journal}}: Cite journal requires |journal= (help)
——— (May 2007). "Christological Insights: Between the Psalms of Solomon and the Sayings Gospel Q (2)". Korean Presbyterian Journal of Theology. 7: 3–39.
——— (May 2008). "A Study of Thomas Christianity". Korean Presbyterian Journal of Theology. 8: 25–46.
——— (2009). "James M. Robinson's Impacts on Korean New Testament Scholarship". Korean Presbyterian Journal of Theology. 9: 23–52.
——— (2013). "Religion and Science: 4 Different Ways to Solve Its Relationship". Journal of Asian and Asian American Theology. 11: 118–139.
——— (2014). "An Inter-textual Study on the Narrative of the Raising of the Widow's Son from Nain (Luke 7:11-17)". Church and Theology. 78: 67–86.* ——— (2014). "Q 14:5 and the Sabbath Controversy". Reformed Theory and Practice. 7: 199–230.
——— (2015). "A Study of the Jewish Sabbath". Church and Theological Seminary. 79: 41–61.
——— (2016). "A Study of the Sabbath Institutions and Observances". Church and Theological Seminary. 80: 65–82.
