Vers. 6. And David divided them into courses, &c.] To wit into twenty foure courses, as were also the priests, according to the command of the Lord by Gad and Nathan the prophets, 2. Chron. 29.25. And he set Levites in the house of the Lord, &c. according to the commandment of David, and of Gad the kings seer, and Nathan the prophet; for so was the commandment of the Lord.
Vers. 8. The sonnes of Laadan, the chief was Jehiel, &c.] That is, the chief of the posterity of Laadan, heads of families at this time when David divided them to their severall imployments and their severall courses, were Jehiel, and Zetham and Joel, and so this word sonnes must be understood hereafter in this chapter.
Vers. 9. The sonnes of Shimei; Shelomith, &c.] This is not Shimei the sonne of Gershon, vers. 7. (for his posterity are spoken of afterward in the following verse,) but another that was it seems the head of a family amongst the sonnes of La∣adan, perhaps one of those mentioned also in the foregoing verse, though called there by another name.
Vers. 11. But Jeush and Beriah had not many sonnes: therefore they were in one reckoning, &c.] That is, they were joyned together and counted as one family, and that because there were not many of their posterity.
Vers. 13. Aaron was separated, that he should sanctifie the most holy things, he and his sonnes for ever, &c.] That is, he and his posterity were set apart to the work of the priesthood, to be imployed about the most holy things, according to the holy ordinances which God had appointed.
Vers. 24. These were the sonnes of Levi, &c. from the age of twenty years and upward.] To wit, when they came to serve in the Temple: for though at this time when they were assigned to their severall imployments, they were onely numbred that were thirty years old and upward, vers. 3. yet before his death David gave order that in each family and office of the Levites, all of twenty years old and upward should be taken in to the service of the Temple, vers. 27. For by the last words of Da∣vid the Levites were numbred from twenty years old and above; and the reason is prefixed; vers. 25, 26. For David said, The Lord God of Israel hath given rest unto his people, that they may dwell in Jerusalem for ever; and also unto the Levites, they shall no more carry the tabernacle, nor any vessels thereof, &c. see the note, ver. 3.
Vers. 28. Because their office was to wait on the sonnes of Aaron, for the service of the house, &c. and in the purifying of all holy things, &c.] That is, the washing and cleansing both of the holy places and vessels, yea, and the sacrifices before they were offered by the priests upon the altar.
Vers. 29. And for all manner of measure and cise.] That is, the Levites also took care to see that those things that were employed in the service af the Temple, as fine floure, and wine, and oyle, for the meat offerings, &c. should be given to the priests according to that weight and measure appointed by the law; for to some sa∣crifices there was a greater measure of these required, and to some lesse, see Numb. 15.4, 6, 9. and Levit. 23.13. and the Levites were to look that the just measures was observed in all these things: yea, many Expositours conclude from hence, that the Levites had the overseeing of all publick measures, and kept the patterns or stan∣dard of them in the Temple, whence they say it is, that the just shekel is called the shekel of the sanctuary, Exod. 30.31.