2 Mambo Ya Nyakati 31:17

Kuandikishwa kwa makuhani kulikuwa kwa kufuata chimbuko la nyumba za baba zao na Walawi kuanzia umri wa miaka ishirini au zaidi ilikuwa kufuatana na huduma zao, kwa migawanyo yao.

Both to the genealogy of the priests by the house of their fathers, and the Levites from twenty years old and upward, in their charges by their courses;