2 Chronicles 31:15-16

15And next him were Eden, and Miniamin, and Jeshua, and Shemaiah, Amariah, and Shecaniah, in the cities of the priests, in their set office, to give to their brethren by courses, as well to the great as to the small:12

16Beside their genealogy of males, from three years old and upward, even unto every one that entereth into the house of Yhwh, his daily portion for their service in their charges according to their courses;