AbstractThe article discusses the central role of the history of religion in the debate on the so-called “crisis of historicism” during the first half of the twentieth century. I argue that the seemingly marginal question of how to write the history of religion informs major debates about the writing of history and history's place in culture. Focusing on Ernst Troeltsch's On Historical and Dogmatical Method in Theology (1900) and Rudolf Bultmann's History and Eschatology (1955), I analyze how theological and historical arguments and concepts interact in their respective histories of religion. According to Troeltsch, the methods of contemporary Religionsgeschichte (history of religion) undermine not only theological dogma but also such common historicist categories as “reason,” “teleology,” or “essence.” Bultmann, using similar methods, develops a similar critique based on the idea of “historicity,” i.e. an anthropological fundament of understanding oneself historically. Here too, the simple and linear understanding of history is called into question by a decidedly religious element, namely eschatology understood as a radically different temporality. Both cases thus show how tightly religious problems, theological arguments, and historical methods are interwoven, and how much our understanding of history, religion, and their mutual relations is informed by this entanglement.