This book is the first volume in Jacob Neusner's ground-breaking trilogy, "The Foundations of Judaism: Method, Teleology, Doctrine." This Part One - "Method" - offers the first systematic explanation of why the midrash collections - that is, books of rabbinical exegeses of Scripture - were written. Neusner investigates the circumstances in which the earliest midrash collections were organized around the Pentateuch, and explains both the purpose of the work and its historical context.

Viewed as ideal types, the Halakhah defines the norm, setting forth what is obligatory, the Aggadah, specifies what exceeds the norm and goes beyond the measure of the law. The striking differences of style and substance that differentiate the two categories of discourse present the question of how they intersect in a single coherent statement, a system that holds together its two distinct media of thought and expression. When we have in hand systematic data on how Aggadah contributes to the Halakhah, and where Halakhah serves the purposes of the Aggadah, we find possible the logical next step: where do the two intersect, and at what points do the respective complexes of category-formations stand autonomous of one another, and that leads to the question: how do Aggadah and Halakhah constitute a coherent religious structure and make in common a single systemic statement? Where, within the formative literature of Normative Judaism, they join together, what affect the one exercises upon the other, and how the whole - Rabbinic Judaism - exceeds and transcends the sum of the parts - the Halakhah, the Aggadah - is spelled out.