Emerging from the academic study of the Old Testament or Hebrew Scriptures during the Enlightenment and Reformation, Israelite religion became a topic of study in terms of the presentation in the Bible of Israel’s worship of its God. Gradually this separated into a synthesis of biblical teachings on worship and its prescribed practices, on the one hand, and a study of the history of biblical Israel in terms of beliefs and practices toward one or more deities, on the other. The former branch evolved into biblical theology, while the latter developed into the topic of Israelite religion. Beginning in the nineteenth century, archaeological excavations and the interpretation of ancient Near Eastern texts preceding and contemporaneous with the period of the Bible broadened the picture. Comparing and contrasting archaeological and textual sources with the application of anthropological models derived from comparative religious studies led to modern syntheses of the subject. Initially these were heavily based upon the biblical text, often with the application of theories of literary and historical criticism. Since the 1980s, however, a focus on texts from the same time and region, as well as interpretation of artifacts with religious significance, has challenged older models of Israelite religion. Influences and the interactions of believers and their deities appear increasingly complex. No longer is there an understanding of a mere one or two religions in Israel (e.g., worshippers of Yahweh and worshippers of Baal). It now seems clear that various religious practices and texts attest to the presence of multiple religions followed by people in the region of ancient Israel, sometimes reflecting differences in gender, culture, ethnicity, and other factors. While a form of worship as described in biblical accounts may have been followed, there were other forms which, in various ways, syncretized Yahweh with other goddesses and gods. This has led scholars to question the factors that led to, and the time of emergence of, belief in a single deity in Israel, as well as to question the nature of that deity. Answers and models remain in a state of flux; evidence remains to be reviewed and interpretations demand critical interpretation.