Ezra 3:4

“Speak to the sons of Israel, saying, ‘On the fifteenth of this seventh month is the Feast of Booths for seven days to Yahweh.

So he left behind Asaph and his relatives there before the ark of the covenant of Yahweh to minister before the ark continually, as every day’s work required;

without regard to their genealogical record, to the males from thirty years old and upward—everyone who entered the house of Yahweh for his daily obligations—for their service in their responsibilities according to their divisions;