27. For by the last words of David the sons of Levi were numbered, from twenty years old and upward.
28. For their office was to wait on the sons of Aaron for the service of the house of the LORD, in the courts, and in the chambers, and in the purifying of all holy things, even the work of the service of the house of God;
29. for the shewbread also, and for the fine flour for a meal offering, whether of unleavened wafers, or of that which is baked in the pan, or of that which is soaked, and for all manner of measure and size;
30. and to stand every morning to thank and praise the LORD, and likewise at even;