Verse 1. "David was old and full of days" - On the phrase full of days, see the note on Gen. xxv. 8.
Verse 3. "Thirty years and upward" - The enumeration of the Levites made in the desert, Num. iv. 3, was from thirty years upwards to fifty years.
In this place, the latter limit is not mentioned, probably because the service was not so labourious now; for the ark being fixed they had no longer any heavy burdens to carry, and therefore even an old man might continue to serve the tabernacle. David made another ordinance afterwards; see on ver. 24, 27.
Verse 5. "Four thousand praised the Lord" - David made this distribution according to his own judgment, and from the dictates of his piety; but it does not appear that he had any positive Divineauthority for such arrangements. As to the instruments of music which he made they are condemned elsewhere; see Amos vi. 5, to which this verse is allowed to be the parallel.
Verse 11. "Therefore they were in one reckoning" - The family of Shimei, being small, was united with that of Laadan, that the two families might do that work which otherwise belonged to one, but which would have been too much for either of these separately.
Verse 13. "To bless in his name" - To bless the people by invoking the name of the Lord.
Verse 17. "But the sons of Rehabiah were very many." - The Targum says, "On account of the merits of Moses, the posterity of Rehabiah were multiplied to more than sixty myriads."
Verse 22. "Their brethren the sons of Kish took them." - This was according to the law made Num. xxvii. 1, &c., and Num. xxxvi. 5-9, in favour of the daughters of Zelophehad, that women who were heiresses should marry in the family of the tribe of their father, and that their estates should not be alienated from them.
Verse 24. "Twenty years and upward." - It appears that this was a different ordinance from that mentioned ver. 3. At first he appointed the Levites to serve from thirty years and upward; now from twenty years.
These were David's last orders; see ver. 27. They should begin at an earlier age, and continue later.
This was not a very painful task; the ark being now fixed, and the Levites very numerous, there could be no drudgery.
Verse 28. "Purifying of all holy things" - Keeping all the vessels and utensils belonging to the sacred service clean and neat.
Verse 29. "Both for the shew-bread" - It was the priests' office to place this bread before the Lord, and it was their privilege to feed on the old loaves when they were replaced by the new. Some of the rabbins think that the priests sowed, reaped, ground, kneaded, and baked the grain of which the shew-bread was made. This appears to be a conceit. Jerome, in his comment on Mal. i. 6, mentions it in these words: "Panes propositionis quos, juxta traditiones Hebraicas, ipsi serere, ipsi demetere, ipsi molere, ipsi coquere debebatis." For all manner of measure and size] The standards of all weights and measures were kept at the sanctuary, and by those there deposited all the weights and measures of the land were to be tried. See the note on Exod. xxx. 13.