1 Chronicles 25:7-9

New Century Version

⁷ These men and their relatives were trained and skilled in making music for the Lord. There were two hundred eighty-eight of them. ⁸ Everyone threw lots to choose the time his family was to serve at the Temple. The young and the old, the teacher and the student, had to throw lots.

⁹ First, the lot fell to Joseph, from the family of Asaph.

Second, twelve men were chosen from Gedaliah, his sons and relatives.