1 Tawarikh 9:25

9:25 Their relatives, who lived in their settlements, came from time to time and served with them for seven-day periods.

1 Tawarikh 23:27

23:27 According to David’s final instructions, the Levites twenty years old and up were counted. ¹ 

1 Tawarikh 26:13

26:13 They cast lots, both young and old, according to their families, to determine which gate they would be responsible for. ² 

[23:27]  ¹ tn Heb “for by the final words of David, they were the number of the sons of Levi, from a son of twenty years and upward.”

[26:13]  ² tn Heb “for a gate and a gate,” i.e., for each gate.