Is Scripture the origin of the Halakhic system, which defines the norms of Judaism? At stake is not the starting point of discrete bits of legal data, but the origin of the comprehensive structure comprised by the Halakhic category-formations. As scripture serves as the natural starting point for inquiries into the origins of Judaism it is quite natural to treat Scripture as the base line and the Halakhic category-formations as the variable when seeking the origin of the system. But what happens when we treat the system as the base line and Scripture as the variable?