4 occurrences in 4 dictionaries
Reference: Mattenai
Hastings
1. 2. Two of those who had married foreign wives, Ezr 10:33 (called in 1Es 9:33 Maltanneus), 1Es 9:37 (combined in 1Es 9:34 with the preceding Mattaniah into Mamnitanemus). 3. Representative of the priestly house of Joiarib in the days of Joiakim (Ne 12:19).
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Morish
Mattena'i
1, 2. Two who had married strange wives. Ezr 10:33,37.
3. Priest of the family of Joiarib. Ne 12:19.
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Smith
Mattena'i
(gift of Jehovah), a contraction of Mattaniah.
1. Two Israelites who divorced their Gentile wives after the return from the Babylonish captivity.
(B.C. 469.)
2. A priest, son of Joiarib, in the time of Joiakim.
(B.C. after 536.)