Easton's Bible Dictionary (1897)
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).
Smith's Bible Dictionary (1863)
(sabbatical) a Levite in the time of Ezra. (Ezra 10:15) It is apparently the same who with Jeshua and others instructed the people in the knowledge of the law.
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
SHABBETH'AI (sabbath-born), a Levite who assisted Ezra in expounding the Law and in dealing with the illegal marriages. Ezr 10:15; Neh 8:7; Num 11:16.
Hitchcock's Bible Names (1869)
my rest