Topic summary
Torah observance

Extracted from the Wikipedia article Torah.
Adoption of Torah law
In his seminal Prolegomena zur Geschichte Israels, Julius Wellhausen argued that Judaism as a religion based on widespread adherence to the Torah and its laws first emerged in 444 BCE when, according to the biblical account provided in the Book of Nehemiah (chapter 8), a priestly scribe named Ezra read a copy of the Mosaic Torah before the populace of Judea assembled in a central Jerusalem square. Wellhausen believed that this narrative should be accepted as historical because it sounds plausible, noting: "The credibility of the narrative appears on the face of it." Following Wellhausen, most scholars throughout the 20th and early 21st centuries have accepted that widespread Torah observance began sometime around the middle of the 5th century BCE.