Shimei Ben-Elah is in Benjamin.

And Rehoboam cometh to Jerusalem, and assembleth all the house of Judah and the tribe of Benjamin, a hundred and eighty thousand chosen warriors, to fight with the house of Israel, to bring back the kingdom to Rehoboam son of Solomon.

'Speak unto Rehoboam son of Solomon, king of Judah, and unto all the house of Judah and Benjamin, and the rest of the people, saying,

And king Asa hath summoned all Judah -- there is none exempt -- and they lift up the stones of Ramah, and its wood, that Baasha hath built, and king Asa buildeth with them Geba of Benjamin, and Mizpah.