Judaism does not have a single clear “founding year,” but its beginnings are usually placed between about 2000–1500 BCE with the patriarch Abraham, and its shaping as a recognizable religious tradition happens between roughly 600–400 BCE and later.

Short direct answer

Most scholars would say:

  • The earliest roots of Judaism lie in the religion of the ancient Hebrews and the figure of Abraham, often dated to almost 4,000 years ago (around 2000–1800 BCE).
  • Judaism as a more defined, text‑centered religion developed after the Babylonian exile, mainly in the 6th–5th centuries BCE, when the Torah was being codified and public observance of its laws spread.

So, Judaism was not “founded” on one exact date the way a modern organization might be; it evolved over many centuries.

Mini timeline: key stages

  • Patriarchal era (Abraham) – Many religious descriptions place the origin of Judaism with God’s covenant with Abraham in the ancient Near East, nearly 4,000 years ago.
  • Early Israelite religion – The faith of the kingdoms of Israel and Judah (often called “Yahwism”) formed the background out of which Judaism later emerged, during the Iron Age (roughly 1200–500 BCE).
  • Babylonian exile and return (587–539 BCE) – The destruction of Jerusalem and the Temple, followed by the exile to Babylon and later return under Persian rule, pushed the community toward a more text‑ and law‑focused religious life.
  • Torah‑centered Judaism (5th–4th c. BCE) – By the time of figures like Ezra and Nehemiah, public reading of the Torah and wider observance of its laws had become central; some historians treat this as the real “birth” of Judaism as a distinct religion.
  • Rabbinic Judaism (1st–6th c. CE) – After the Second Temple was destroyed in 70 CE, rabbinic teaching and texts such as the Mishnah and Talmud developed the form of Judaism that most Jewish practice is based on today.

Different viewpoints in scholarship

Because “Judaism” is a modern label applied to a long process, historians disagree on when to mark its beginning:

  • Some emphasize Abraham and the patriarchs , highlighting the early covenant and monotheistic focus.
  • Others point to the post‑exilic period (after 587/586 BCE) when the Temple was rebuilt, laws were codified, and the community was reorganized under Persian rule.
  • Still others highlight 444 BCE and the public reading of the Torah described in the Book of Nehemiah as a turning point for a Torah‑based community.
  • A number of scholars reserve the term “Judaism as we know it” for the period of widespread Torah observance and later rabbinic development , from the late Second Temple period into late antiquity.

Simple takeaway

If you need an easy phrase:

  • Judaism’s roots go back almost 4,000 years to Abraham and the ancient Hebrews.
  • As a distinct, law‑ and scripture‑based religion, it took shape mainly between the 6th and 4th centuries BCE and continued to crystallize into Rabbinic Judaism in the first centuries CE.

Information gathered from public forums or data available on the internet and portrayed here.