1 Chronicles 25:10

The number of them, with their brothers who were instructed in singing to the LORD, even all who were skillful, was two hundred eighty-eight.

They cast lots for their offices, all alike, the small as well as the great, the teacher as well as the student.

Now the first lot came out for Asaph to Joseph; the second to Gedaliah, he and his brothers and sons were twelve;

the fourth to Izri, his sons and his brothers, twelve;

the fifth to Nethaniah, his sons and his brothers, twelve;

the sixth to Bukkiah, his sons and his brothers, twelve;