Shabbethai

A man, in the time of Exile and Return · named in 1 verse

the name means restful Strong's Lexicon

Shabbethai, a Levite, opposed Ezra's efforts to address the issue of intermarriage among the returned exiles.

From Easton's Bible Dictionary

Sabbath-born, a Levite who assisted in expounding the law and investigating into the illegal marriages of the Jews (Ezra 10:15; Neh. 8:7; 11:16).

Easton's Illustrated Bible Dictionary, 1897 — public domain, quoted in full and unedited.

First named at Ezra 10:15.

Ezra 10:15 (Only Jonathan son of Asahel and Jahzeiah son of Tikvah, supported by Meshullam and Shabbethai the Levite, opposed this plan.)