Ecumenical Institute at Bossey

The Ecumenical Institute at Bossey is the international centre for encounter, dialogue and formation of the World Council of Churches. Founded in 1946, the Institute brings together people from diverse churches, cultures and backgrounds for ecumenical learning, academic study and personal exchange.

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Teaching staff


Rev. Dr Ioan Sauca, Director

The director of the Ecumenical Institute is a priest of the Romanian Orthodox Church and lectures in missiology and ecumenical theology. He taught missiology and ecumenism in his home country at the Faculty of Theology in Sibiu, Romania. A graduate of the Ecumenical Institute, Sauca holds a Ph.D. in missiology from the University of Birmingham, England. Appointed director of the Ecumenical Institute in 2001, Sauca also heads the education and ecumenical formation programme of the WCC.
View CV and a list of publications (pdf)

Rev Dr Kuzipa Nalwamba, Professor of Ecumenical Social Ethics

Ordained in the United Church of Zambia (UCZ) Nalwamba holds PhD and MA (Theology) degrees from the University of Pretoria, South Africa, MTh (History of Christianity and Mission) and MDiv from Trinity Theological College, Singapore. She also holds a BA Ed. from the University of Zambia. She worked at the Council for World Mission and prior to that as lecturer and academic dean at the United Church of Zambia Theological College, staff at the International Fellowship of Evangelical Students and as high school teacher. Her research interests include Eco-theology and History of Christianity. She joined the Ecumenical Institute faculty in August 2019 and is also Programme Executive for Ecumenical Theological Education (ETE).
View CV and a list of publications (pdf)

Rev. Dr Simone Sinn, Professor of Ecumenical Theology

A theologian and ordained pastor seconded to the WCC from the Evangelical Church in Germany (EKD), Simone Sinn holds a doctorate in systematic theology from the University of Münster. In her doctoral research, Sinn explored the theological and socio-political questions entangled in religious pluralism. From 2013 to 2018, Sinn worked in the theology department of the Lutheran World Federation in Geneva and coordinated international study processes and consultations in the area of public theology and interreligious relations. Sinn joined the faculty of the Ecumenical Institute in July 2018, combining teaching at Bossey with programme executive responsibility in the World Council of Churches’ Commission on Faith and Order.

View CV and a list of publications (pdf)

Rev. Fr Dr Lawrence Iwuamadi, Professor of Ecumenical Biblical Hermeneutics

A Roman Catholic priest of the Archdiocese of Owerri, Nigeria. Iwuamadi obtained his licentiate degree in Sacred Scriptures (SSL) from the Pontifical Biblical Institute in Rome and his Ph.D. in biblical theology from the Pontifical Gregorian University also in Rome. Before being appointed to the Ecumenical Institute in 2012 by the Vatican, he taught Fundamental Scriptures, Greek and New Testament Theology at the Seat of Wisdom Seminary in Owerri. The chair of Ecumenical Biblical Hermeneutics is supported by the Pontifical Council for Promoting Christian Unity (PCPCU). In January 2018, Iwuamadi was appointed the Academic Dean.

Rev. Dr Odair Pedroso Mateus, Professor of Ecumenical Theology

A pastor of the Independent Presbyterian Church of Brazil, Mateus worked in the Office for Theology and Ecumenical Engagement in the World Alliance of Reformed Churches and edited its quarterly journal Reformed World. A graduate of the Ecumenical Institute, he holds a Ph.D. in theology from the Faculty of Protestant Theology of the Marc Bloch University, in Strasbourg, France. From 2007 he is lecturing at the Ecumenical Institute and participating in the work of WCC’s Faith and Order Commission. Since 2015 he also has been appointed Director of Faith and Order. His chair is supported by the US-based Christian Church (Disciples of Christ).
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Rev. Dr. Peniel Jesudason Rufus Rajkumar, Adjunct Professor

Ordained Anglican Priest Rajkumar is the Programme Executive and Coordinator of the WCC’s Office of Interreligious Dialogue and Cooperation. His focus is on building relations of trust and respect with followers of Eastern religious traditions, primarily Hinduism and Buddhism. He completed his PhD in applied theology and ethics from the University of Kent at Canterbury. He was at the United Theological College in Bangalore, India as Associate Professor of Christian Social Ethics and Director of Field Education, while being an associate minister of the Church of South India. Rajkumar has published widely in the areas of interreligious dialogue, Christian ethics, mission, and religious fundamentalism, post-colonialism and world Christianity. He is teaching at the Ecumenical Institute since 2016.
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Dr. Vasile-Octavian Mihoc, Adjunct Professor

With educational background that is ecumenical, focusing on Systematic Theology and intercultural and interreligious issues, Mihoc holds a BA and MA from the Faculty of Orthodox Theology, University of Sibiu (Romania), and a PhD from the Faculty of Protestant Theology, University of Göttingen. Between 2013-2019, he was a Research and Teaching Assistant at the Faculty of Roman Catholic Theology, University of Münster designing and teaching courses on topics like comparative Missiology, Ecumenics and the Study of Christian theology beyond Europe; religious identity and conversion; interreligious theology; methods and projects in comparative theology, and theological aesthetics. He joined the Ecumenical Institute in 2019 and also serves as the Programme Executive in charge of ecumenical relations of the World Council of Churches.
View CV and a list of publications (pdf)