Source in the Spotlight

A Syrian Christian Rite for the Baptism of Muslim Children
How could Christian priests baptize Muslim children without converting them to Christianity? A twelfth century Syrian Orthodox rite for the baptism of Muslim children provides a fascinating glimpse into the fraught and fruitful intimacies between Christians and Muslims in Medieval Anatolia.
Latest Case Study
“Zealousy”. A Shared Emotion to Divide Abraham’s Children
Emotional ideology plays a vital role in the history of religion. This case study shows how the rivalrous emotions—envy and jealousy—gained a peculiar importance in the way both Christians and Jews came to feel about God and religious conformity.

Event: Open Zoom Seminar
Open Seminar with Rebecca Wollenberg (Michigan): The Abrahamic Vernacular
In the past decade, we have arrived at a strange impasse in the collective study of Judaism(s), Christianit(ies), and Islam(s). We live in a moment when many scholars of religion insist that the historical movements identified with Judaism, Christianity, and Islam cannot be grouped together into any sort of meaningful analytic category. At the same time, scholars of religion are producing more comparative work than ever on the overlaps and intersections between local iterations of Judaism, Christianity, and Islam in various historical periods. As a field, it sometimes seems that we are frantically studying a phenomenon that we claim does not exist.
This talk argues that the category of Abrahamic traditions is a robust one, but we have been searching for its causes backwards. Rather than deriving from essential structural similarities, theological affinities, or shared origins, the category of Abrahamic religion has been produced slowly over the course of history by an ongoing relational constellation. In their centuries of rivalry over a shared imaginative space, Judaism, Christianity, and Islam evolved facing each other. As a result of this historical orientation towards rival traditions and their claims, practitioners of Judaism, Christianity, and Islam have frequently developed shared local languages of religious imagination that have led practitioners to develop overlapping (if sometimes competing) concepts and rituals. This talk argues that this shifting kaleidoscope of different historical entanglements has left enduring traces of resemblance on these three traditions—and it is those residual commonalities that generate the category of Abrahamic as we perceive it.
Event: International Conference
The “Excluded Third” in the Co-Production of Judaism, Christianity, and Islam
Organized by Mercedes García-Arenal, Katharina Heyden, David Nirenberg, and Davide Scotto
Judaism, Christianity, and Islam are often understood as an ensemble of three (‘Abrahamic,’ ‘monotheistic,’ scriptural, or prophetic) religious communities and traditions. But often when adherents of two of these “sibling” religions interact, the third is treated as a figure to be marginalized, stigmatized, or instrumentally exploited vis-à-vis the others. This conference proposes to explore this dynamic of the excluded third.
Click this link for the Call for Papers. Proposals are due by June 1, 2024.
Latest Publication
Co-produced Religions: Judaism, Christianity, and Islam
Harvard Theological Review 118 (2025), 159-180.
About
Who we are
The project is coordinated by Katharina Heyden, Professor for Ancient History of Christianity and Interreligious Encounters at the University of Bern (Switzerland), and David Nirenberg, Leon Levy Professor at the Institute for Advanced Study, Princeton (U.S.), and includes a network of collaborators across North America, Europe, and the Middle East.