SEV Biblia, Chapter 23:23
Los hijos de Musi: Mahli, Eder y Jerimot, ellos tres.
Clarke's Bible Commentary - 1 Chronicles 23:24
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.
John Gill's Bible Commentary
Ver. 24. These were the sons of Levi, after the house of their fathers , etc.] According to the three classes of them, as descending from the three sons of Levi: [even] the chief of the fathers ; or heads of families: as they were counted by number of names by their polls ; or according to their heads, one by one: that did the work for the service of the house of the Lord ; the particulars of which are in ( 1 Chronicles 23:28-31) from the age of twenty years, and upwards ; they were first numbered thirty and upwards, ( 1 Chronicles 23:3), but David before his death ordered they should be numbered from twenty and upwards, ( 1 Chronicles 23:27), because the Israelites being increased, there would be more work for the priests in the temple, which would require the assistance of more Levites. The reasons follow.
Matthew Henry Commentary
Verses 1-23 - David, having given charge concerning the building of the temple settles the method of the temple service, and orders the officers of it. When those of the same family were employed together, it woul engage them to love and assist one another.
Original Hebrew
בני 1121 מושׁי 4187 מחלי 4249 ועדר 5740 וירמות 3406 שׁלשׁה׃ 7969