Dr. In-Sub Ahn's Website

Prof. Dr. In-Sub Ahn 

 Associate Professor (Church History)

of Chongshin University and Theological Seminary, South Korea  (www.chongshin.ac.kr)


He is an ordained pastor of the General Assembly of the Presbyterian Church in Korea (GAPCA) (www.gapck.org)


Dr. In-Sub Ahn of Chongshin University about Augustine and Calvin studies



1. Curriculum Vitae


Assigned positions at Chongshin University :

Director of Reformed Theology Research Center (RTRC) (2017-2018)

Director of Library (Yangji campus) (2017-2018)

Director of Training Institute for Full-Time Faculty (2014-2018)

Dean of Global Reformed Theology (2016-2017)

Dean of International Cooperation (2012. 3-2016)



Dr. In-Sub Ahn of Chongshin University about Augustine and Calvin studies



Assigned positions in other organizations :

Senior Research Fellow at Leibniz-Institut für Europäische Geschichte (IEG), Mainz, Germany (2021)

General Secretary of the Korean Reformed Theological Society (2020-present)

 Project Manager of Refo500 Asia (2011-2017)

Board Member of ATA (Asia Theological Association) (2016-2018)

Chairperson of Korea Calvin Society (2010)


Member of the Inter-Korean Relations Development Committee (in the Ministry of Unification / 2019.10.-present)

Chairperson of Christian Society for National Reunification (2016-present)

Chairperson of the Board of North & South Love Network (2013.12-present)



2. Academic works of Dr. In-Sub Ahn




He received Ph.D. degree at the Theological University of Kampen, The Netherlands, in August 29, 2003.

The title of Ph.D. : "Augustine and Calvin about Church and State: A Comparison."




( English and European languages )


“Calvin's Use of Augustine in his view on Church and State, Intercultural Student of Augustine,” in: Calvinus Frater in Domino: Papers of the Twelfth International Congress on Calvin Research (Reformed Historical Theology) Vol. 65 (Göttingen: Vandenhoeck & Ruprecht, 2020), pp. 103-124.



"Incarnation and the Church Ministry from the perspective of John Calvin," Chongshin Theological Journal vol. 23 (2018), pp. 209-231. 


“Augustine’s Interpretation of the Bible about Church and State,” Journal of Korean Institute for Reformed Studies, vol. 16 (2015), pp. 395-427.


“Calvin’s Thoughts and Works on Society and his Teachings for the Reunification of Korea,” in: Chongshin Theological Journal vol. 22 (2014). pp. 127-146.


“Calvin’s Theology of Reconciliation in his Sermons,” in: Calvinus clarissimus theologus: Papers of the Tenth International Congress on Calvin Research (Göttingen: Vandenhoeck & Ruprecht, 2012), pp. 11-36.



“John Calvin's Reception in North-East Asia,” in: Chongshin Theological Journal vol. 16 (2011). pp. 151-175.


​"Calvin in Asia," in: The Calvin Handbook (Grand Rapidis: Eerdmans Publishing, 2009).


​"Calvijn in Azië," in: Calvijn Handboek (Kok: Kampen, 2008).


​"Calvin in Asia," in: The Calvin Handbuch (Tübingen: Mohr Siebeck, 2008).


​“Calvijn in (Zuid-) Korea,” in: Het Calvinistisch Ongemak (Kok: Kampen, 2009), pp. 237-248.

​“The Presbyterian Churches of (South) Korea and the Reunification Issue - A Matter of Reconciliation,” in: Contact Zone. Explorations in Intercultural Theology vol. 1 (2009). pp. 85-95.


“Calvin's Thought on Civitas Dei,” in: Calvin in Asian Churches vol. 3. (Korea Calvin Society, 2008), 267-291.


“Calvin's View of Augustine and the Donatist Church,” in: Calvinus sacrarum literarum interpres: Papers of the International Congress on Calvin Research (Reformed Historical Theology) Vol. 5 (Göttingen: Vandenhoeck & Ruprecht, 2008), pp. 271-284).

     Calvinus sacrarum literarum interpres.jpg


"A Historical Development of the Relationship between the South and the North Korean Protestant Churches from 1945 to the Beginning of 21st Century,” in: Chongshin Theological Journal vol. 13 (2008), pp. 168-187.


“A Study on the Components of Augustine's Teachings on Church and State,” in: Chongshin Theological Journal vol. 11 (2006), pp. 189-216.



( Korean with an English abstract )


"A Study on the Development of the Reformation of the Reformed Theology in the Palatinate(1558-1561): Centering on the Relation to Melanchthon and Calvin," Korea Reformed Journal, vol. 71 (2021), pp. 227-268. (published in Korean with an English abstract).


"A Study on the Future of a Reunification of the Korean Peninsula through the History of the Republic of the United Netherlands(1558)," A Journal of Christianity and National Reunification, vol. 12 (2021), pp. 5-38. (published in Korean with an English abstract).


"A Study on the Life and Theology of Reformed Theologian, Jean Taffin (1529-1602)," A Journal of Chongshin University, vol. 40 (2020), pp. 119-149. (published in Korean).


"A Study on the Theology of a Dutch Reformer, Philip Marnix of St. Aldegonde, Student of Calvin," Korea Reformed Journal, vol. 54 (2020), pp. 169-208. (published in Korean with an English abstract).


"A Study on Calvin's Theology about the Kingdom of God," Korea Reformed Theology, vol. 68 (2020), pp. 132-165. (published in Korean with an English abstract).


"A Study on Zwingli(1484-1531)'s Theology on the Social Ethics," Presbyterian Theological Quarterly, vol. 86 (4) (2019), pp. 165-191. (published in Korean with an English abstract).


"The Relationship Between the Church and the State in the Remonstrants with a focus on Johannes Wtenbogaert (1557-1644)," Korea Reformed Theology, vol. 60 (2018), pp. 10-51. (published in Korean with an English abstract).


"The Church and State of the Netherlands before the Synod of Dort(1618-19)," Korean Reformed Theology, vol. 57 (2018), pp. 279-312. (published in Korean with an English abstract).


"Theological foundation of Calvin's view of Church and State: Centered on controversy with a certain Dutch an Dirck Coornhert(1522-1590)," Korea Reformed Theology, vol. 55 (2017), pp. 8-39. (published in Korean with an English abstract).


"Belgic Confession on the State and Studies on the Relationship between Church and State shown in the Independence of the Netherlands," Bible and Theology, vol. 82 (2017), pp. 179-214. (published in Korean with an English abstract).


“A Study on the Perspective of the Reformed Theology for the Formation of Reunification Theology: Centering on Augustine(354-430),” Korea Reformed Theology, vol. 53 (2017), pp. 198-222. (published in Korean with an English abstract).


“Calvin’s Thoughts on Christian Education and its Influence to the Genevan City Community,” Journal of Christian Education in Korea, vol. 48 (2016), pp. 183-214.


“A Study on the Christians’ Participation into the Politics: A Comparison between John Calvin(1509-1564) and Abraham Kuyper(1837-1920),” Journal of Church History Society in Korea vol. 30 (2011), pp. 183-229.



Paper Presentations 


"Calvin's Use of Augustine in his view on Church and State: Calvin, Intercultural Student of Augustine," 12th International Congress on Calvin Research (Philadelphia, 2018. 8.26-30).


"The Church and State revisited: From Calvin to Calvinism: A Comparative study of Calvin and the Belgic Confessions(1561)," Refo500 Asia Conference: Remembering and Resignifying 500 Years of Reformation (Chongshin University, Seoul, Korea, 2017. 11.)


"Implication of the Reformation 500 Years for the Korean Churches," 2016 ATA Triennial General Assembly and International Conference. Reformation and Asia (Chongnshin University, Seoul, Korea, 2016. 7. 25-29).


"Suffering in J. Calvin(1509-1564) and Jean Taffin(1529-1602)," 11th International Congress on Calvin Research (Zürich, 2014. 8. 24-28).


"Calvin's Theology on the Multi-Cultural Church of Geneva and its Reflection on the Korean Context," Church Life in an urban secular and multi religious context, organized by Protestant Theological University, The Netherlands (Hongkong, 2012. 11. 15-11. 18).


"Social Teachings of John Calvin and His Suggestions for the Reunification of Korea," 111th Conference of Church History Society in Korea & Refo500 Asia Conference (Chongshin University, Seoul, Korea,2012. 5. 25-5. 26).


"Calvin's Theology of Loving Neighbors," 11th Asian Congress on Calvin Research and Refo500 Asia (Chongshin University, Seoul, Korea, 2011. 1. 17-1-19).


​"Calvin's Theology of reconciliation in his Sermons," 10th International Congress on Calvin Research (Free State University, South Africa, 2010. 8. 22-8. 27).


​"The 7th International Conference of North-East Asia Council of Studies of History of Christianity," The Comparative Study of the Christian Movement in North-East Asia (Central China Normal University, Wuhan, China, 2009. 8. 24-8.26).


​"Het Calvinistisch Ongemak," Calvijn als erflater en provocator van het Nederlandse protestantisme organized by De Protestantse Theologische Universiteit (Kampen, The Netherlands, 2009.4.28).

​"Calvin's Thoughts on Civitas Dei," Calvin: toujours Nouveau, 10th Asia Calvin Congress (Tokyo, 2007.8.21-23).


​"Calvin's View of Augustine and the Donatist Church," The ninth International Congress on Calvin Research (Emden, Germany, 2006.6.22-26).


​"A Development of the Viewpoint of the Presbyterian Churches of South Korea toward North Korea," Congress Kampen Theological University 1854-2004 (Kampen, The Netherlands, 2004.9.1.-9.4).


​"The development of Augustine's idea on Church and State - centering on his interpretation of Dan 2: 31-45," (The Netherlands School for Advanced Studies in Theology and Religion) Annual Conference (Amsterdam, 2001 11.2.)



"Mijn ervaringen in Kampen als Koreaan,"Communique, vol.16-1. Kampen: Kampen Theological University, 1999. pp.67-70.]

3. Life


Born in Namyangju, South Korea on the 5th of October 1965,

he studied History at Korea University in Seoul between 1985 and 1989, graduating with a Bachelor of Art (B.A.).

From 1992 to 1995 he studied Theology at the Presbyterian General Assembly (Chongshin) Theological Seminary in Korea graduating with a Master of Divinity (M. Div.).

He was invited to study Church History by the Theological University of the Reformed Churches in the Netherlands in Kampen (Theological University of Kampen (ThUK))

 with a full scholarship in January of 1998.

He gained his Drs. degree (1999) and Ph.D. degree (2003) at Theological University of Kampen (ThUK), the Netherlands. 

The title of his Drs.(Th.M.) Thesis was "Calvin's Use of Augustine's Ideas about Church and State"; it was carried out under the guidance of Prof. dr. Auke J. Jelsma.

He got his Ph.D. under the joint supervision of his advisor (Promotor) Prof. dr. Auke J. Jelsma (ThUK) and second advisor (tweede Promotor) Prof. dr. Willemien Otten (Utrecht University). 


Augustine and Calvin about Church and State, Dr. In-Sub Ahn


Augustine and Calvin about Church and State, Dr. In-Sub Ahn

Promotors: prof. dr. Auke J. Jelsma and prof. dr. Willemien Otten


He is managing a Church History Website, http://www.church-history.org, since 2000. 

He worked at Huam Presbyterian Church and YonHee Presbyterian Church in Seoul as an assistant pastor for three years. 


He is married to Dr. Mi-Rang Kang since 1995, who also received Th.M and Ph.D. in Practical Theology (Christian Education) at the same University (ThUK).

Dr. Mi-Rang Kang


This is Dr. Mi-Rang Kang's Dissertation.

Interpretative Identity and Hermeneutical Community (Münster: LIT, 2010).

Dr. Mi-Rang Kang


Dissertation of Dr. Mi-Rang Kang


Her speicial ares are the Christian Education and Catechism.

She is Adjunct Professor of Westminster Graduate School of Theology in Korea. (www.wgst.ac.kr)

Together they have a daughter, Ji-In Ahn, who was born in Kampen on April 28, 2000.



4. About site


This website is focused on the next points.

1. Augustine of Hippo (354-430) and John Calvin (1509-1564)
2. Reformations in the 16th century
3. History of Calvinism in Europe (16~17 centuries) and the Dutch Reformed Churches
4. Korean Church History and the Reunification of Korea
5. Church and State and Christian Cultures



5. Office


Chongshin University and Theological Seminary

(Sadang, Seoul Campus)

143, Sadang-ro, Dongjak-gu, Seoul, South Korea (Postal Code: 156-879) 
 Tel: +82 2 3479-0200

(Yangji Campus)

110 Hagchon-ro, Yangji-myeon, Cheoin-gu, Yongin-sity Gyeonggi-do South Korea (Postal Code: 17157)
Tel: +82 (0)31 679-1700


6. Personal Contact

e-mail: [email protected]


(by Church-History.org since 2000)