1 Chronicles 23:27

23 The sons of Mushi: Mahli, Eder, and Jeremoth—three in all.

24 These were the descendants of Levi by their families—the heads of families, registered individually by name—those twenty years of age or older who worked in the service of the house of the LORD.

25 For David had said, “The LORD, the God of Israel, has given rest to His people and has come to dwell in Jerusalem forever.

26 So now the Levites no longer need to carry the tabernacle or any of the articles for its service.”

27 For according to the final instructions of David, the Levites twenty years of age or older were counted,

28 but their duty was to assist the descendants of Aaron with the service of the house of the LORD, being responsible for the courts and chambers, the purification of all the holy things, and the work of the service of the house of God,

29 as well as for the rows of the showbread, the fine flour for the grain offering, the wafers of unleavened bread, the baking, the mixing, and all measurements of quantity and size.

30 They were also to stand every morning to give thanks and praise to the LORD, and likewise in the evening.

31 Whenever burnt offerings were presented to the LORD on the Sabbaths, New Moons, and appointed feasts, they were to serve regularly before the LORD in the numbers prescribed for them.

Read all of 1 Chronicles 23