1 Chronicles 23:3

23:3 The Levites who were thirty years old and up were counted; there were 38,000 men.

1 Chronicles 23:24

23:24 These were the descendants of Levi according to their families, that is, the leaders of families as counted and individually listed who carried out assigned tasks in the Lord’s temple and were twenty years old and up.

1 Chronicles 23:26-27

23:26 So the Levites no longer need to carry the tabernacle or any of the items used in its service.” 23:27 According to David’s final instructions, the Levites twenty years old and up were counted.