The book of Ezra–Nehemiah records Nehemiah’s mid-fifth-century B.C.E. attempts to enforce Shabbat, and for the first time in the Bible, the name שַׁבְּתַי, Shabbethai, appears. In this period, similar names derived from Shabbat are also first attested in Babylonian cuneiform tablets, as well as ostraca and papyri from Elephantine, suggesting that Shabbat became a recognized reference within the Judean community.