Reubenites were members of the tribe descended from Reuben, one of the sons of Israel. The designation identifies persons belonging to that tribal group. Reubenites appear in the genealogical and tribal records of Israel and include Adina, who was counted among David’s mighty men.
The term occurs in connection with the tribe of Reuben, including the listing of its members in Numbers. Adina is specifically identified as a Reubenite among David’s mighty men.