6. David divided them into courses among the sons of Levi—These are enumerated according to their fathers' houses, but no more of these are mentioned here than the twenty-four thousand who were engaged in the work connected with the Lord's house. The fathers' houses of those Levites corresponded with the classes into which they [JOSEPHUS, Antiquities] as well as the priests were divided (see on 1Ch 24:20-31; 1Ch 26:20-28).

     1Ch 23:7-11. SONS OF GERSHON.

     7-11. the Gershonites—They had nine fathers' houses, six descended from Laadan, and three from Shimei.

     1Ch 23:12-20. OF KOHATH.

     12. The sons of Kohath—He was the founder of nine Levitical fathers' houses.

     13. Aaron was separated—as high priest (see on 1Ch 25:1-19).