Interactive Histories, Co-Produced Communities: Judaism, Christianity, Islam

Our goal is to provide the foundations of a new history of Judaism, Christianity, and Islam as co-produced communities, a history that makes clear the many different ideas and ideals that each of these communities has formed, and continues to form, by interacting with or imagining the others.

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All Sources

Source in the Spotlight

Church of the Forty Martyrs MS 41, f. 37r.

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.

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All Case Studies

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.

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All Events

Event: Open Zoom Seminar

Open Seminar with Rebecca Wollenberg (Michigan): The Abrahamic Vernacular

MAY 19, 2025, 9:30–11 AM EST, 3:30–5 PM CET Online

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

JUN 10–13, 2025 Villa Vigoni (Como Lake, IT)

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.

All Publications

Latest Publication

Co-produced Religions: Judaism, Christianity, and Islam

Harvard Theological Review 118 (2025), 159-180.

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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.

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