Hebrew University Professor Emeritus and Israel Prize recipient Eliezer Schweid (1929-2022) is widely regarded as one of the greatest historians of Jewish thought of our era. In Siddur Hatefillah, he probes the Jewish prayer book as a reflection of Judaism's unity and continuity as a unique spiritual entity; and as the most popular, most uttered, and internalized text of the Jewish people. Schweid explores texts which process religious philosophical teaching into the language of prayer, and/or express philosophical ideas in prayer’s special language – which the worshipper reflects upon in order to direct prayer, and through which flows hoped-for feedback. With the addition of historical, philological, and literary contexts, the study provides the reader with first-time access to the comprehensive meaning of Jewish prayer—filling a vacuum in both the experience and scholarship of Jewish worship.

Ruth Langer offers an in-depth study of the birkat haminim, a Jewish prayer for the removal of those categories of human being who prevent the messianic redemption and the society envisioned for it. In its earliest form, the prayer cursed Christians, apostates to Christianity, sectarians, and enemies of Israel. Drawing on the shifting liturgical texts, polemics, and apologetics concerning the prayer, Langer traces the transformation of the birkat haminim from what functioned without question in the medieval world as a Jewish curse of Christians, through its early modern censorship by Christians, to its modern transformation within the Jewish world into a general petition that God remove evil from the world. Christian censorship played a crucial role in this transformation of the prayer; however, Langer argues that the truest transformation in meaning resulted from Jewish integration into Western culture. Eventually, the prayer shed its references to any specific category of human being and lost its function as a curse. Reconciliation between Jews and Christians today requires both communities to confront a long history of prejudice. Ruth Langer shows through the birkat haminim how the history of one liturgical text chronicled Jewish thinking about Christians over hundreds of years.

For as long as historians have contemplated the Jewish past, they have engaged with the idea of diaspora. Dedicated to the study of transnational peoples and the linkages these people forged among themselves over the course of their wanderings and in the multiple places to which they went, the term "diaspora" reflects the increasing interest in migrations, trauma, globalism, and community formations. The Oxford Handbook of the Jewish Diaspora acts as a comprehensive collection of scholarship that reflects the multifaceted nature of diaspora studies. Persecuted and exiled throughout their history, the Jewish people have also left familiar places to find better opportunities in new ones. But their history has consistently been defined by their permanent lack of belonging. This Oxford Handbook explores the complicated nature of diasporic Jewish life as something both destructive and generative. Contributors explore subjects as diverse as biblical and medieval representations of diaspora, the various diaspora communities that emerged across the globe, the contradictory relationship the diaspora bears to Israel, and how the diaspora is celebrated and debated within modern Jewish thought. What these essays share is a commitment to untangling the legacy of the diaspora on Jewish life and culture. This volume portrays the Jewish diaspora not as a simple, unified front, but as a population characterized by conflicting impulses and ideas. The Oxford Handbook of the Jewish Diaspora captures the complexity of the Jewish diaspora by acknowledging the tensions inherent in a group of people defined by trauma and exile as well as by voluntary migrations to places with greater opportunity.

Minhag (custom) played a far greater and far more important role in medieval Ashkenazic society than in any other Jewish community. In upholding the authority of a custom, halakhic authorities frequently asserted that "custom prevails over halakhah." Furthermore, Ashkenazic authorities asserted that Ashkenazic custom is more authentic than the customs of other Jewish communities, including those of Sepharad (Spain). Given the importance attributed to minhag and the influence of the siddur commentaries of the circle of Hassidei Ashkenaz, which emphasize the precise formulation of liturgical texts, one might assume that Ashkenazic Jewry was committed to preserving ancestral custom and opposed to liturgical change. However, the reality is that the liturgy of Ashkenaz was never static. From a very early time, new liturgies and liturgical practices were incorporated into the service, the inclusion of various prayers was challenged, and variant readings of prayers became standard. Tradition, Interpretation, and Change focuses on developments in the Ashkenazic rite, the liturgical rite of most of central and eastern European Jewry, from the eleventh century through the seventeenth. Kenneth Berger argues that how a prayer or practice was understood, or the rationale for its recitation or performance, often had a profound effect on whether and when it was to be recited, as well as on the specific wording of the prayer. In some cases, the formulation of new interpretations served a conservative function, as when rabbinic authorities sought to find new, alternative explanations which would justify the continued performance of practices whose original rationale no longer applied. In other cases, new understandings of a liturgical practice led to changes in that practice, and even to the development of new liturgies expressive of those interpretations. In Tradition, Interpretation, and Change, Berger draws upon a wide body of primary sources, including classical rabbinic and geonic works, liturgical documents found in the Cairo genizah, medieval codes, responsa, and siddur commentaries, minhag books, medieval siddur manuscripts, and early printed siddurim, as well as a wealth of secondary sources, to provide the reader with an in-depth account of the history and history of interpretation of many familiar and not-so-familiar prayers and liturgical practices. While emphasizing the role that the interpretation ascribed to various prayers and practices had in shaping the liturgy of medieval and early modern Ashkenaz, Berger illustrates the degree to which Sephardic and kabbalistic influences, concern for the fate of the dead, the fear of demons, and the desire for healing and divine protection from a variety of dangers shaped both liturgical practice and the way in which those practices were understood.

The Leipzig Mahzor is one of the most lavish Hebrew illuminated manuscripts of all time. A prayer book used during Jewish holidays, it was produced in the Middle Ages for the Jewish community of Worms in the German Rhineland. Though Worms was a vibrant center of Judaism in the eleventh and twelfth centuries and drew celebrated rabbis, little is known about the city's Jews in the later Middle Ages. In the pages of its famous book, Katrin Kogman-Appel discovers a portal into the life of this fourteenth-century community. Medieval mahzorim were used only for special services in the synagogue and "belonged" to the whole congregation, so their visual imagery reflected the local cultural associations and beliefs. The Leipzig Mahzor pays homage to one of Worms's most illustrious scholars, Eleazar ben Judah. Its imagery reveals how his Ashkenazi Pietist worldview and involvement in mysticism shaped the community's religious practice. Kogman-Appel draws attention to the Mahzor's innovations, including its strategy for avoiding visual representation of God and its depiction of customs such as the washing of dishes before Passover, something less common in other mahzorim. In addition to decoding its iconography, Kogman-Appel approaches the manuscript as a ritual object that preserved a sense of identity and cohesion within a community facing a wide range of threats to its stability and security.

These studies explore the history of the Jewish minority of Ashkenaz (northern France and the German Empire) during the High Middle Ages. Although the Jews in medieval Europe are usually thought to have been isolated from the Christian majority, they actually were part of a 'Jewish-Christian symbiosis.' A number of studies in the collection focus on Jewish-Christian cultural and social interactions, the foundations of the community ascribed to Charlemagne, and especially on the fashioning of a martyrological collective identity in 1096. Even when Jews resisted Christian pressures they often did so by internalizing Christian motifs and turning them on their heads to argue for the truth of Judaism alone. This may be seen especially in the formation of Jews as martyrs, a trope that places Jews as collective Christ figures whose suffering brings about vicarious atonement. The remainder of the studies delve into the lives and writings of a group of Jewish ascetic pietists, Hasidei Ashkenaz, which shaped the religious culture of most European Jews before modernity. In Sefer Hasidim (Book of the Pietists), attributed to Rabbi Judah the Pietist of Regensburg (d. 1217), one finds a mirror of everyday Jewish-Christian interactions even while the author advances a radical view of Jewish religious pietism.