1 Chronicles 24:3

3 et divisit eos David id est Sadoc de filiis Eleazar et Ahimelech de filiis Ithamar secundum vices suas et ministerium

1 Chronicles 24:3 Meaning and Commentary

1 Chronicles 24:3

And David distributed them
The posterities of Eleazar and Ithamar into certain classes or courses:

both Zadok of the sons of Eleazar, and Ahimelech of the sons of
Ithamar;
these were the two principal men of the respective families, the one was high priest, and the other "sagan" or deputy; or they both officiated as high priests alternately, until the one was removed in Solomon's time, and the other established alone. And now their brethren the priests, who were under each of these, are the persons David divided into classes:

according to their offices in their service:
to perform their office as priests in the service of the temple in their turns.

1 Chronicles 24:3 In-Context

1 porro filiis Aaron hae partitiones erunt filii Aaron Nadab et Abiu et Eleazar et Ithamar

2 mortui sunt autem Nadab et Abiu ante patrem suum absque liberis sacerdotioque functus est Eleazar et Ithamar

3 et divisit eos David id est Sadoc de filiis Eleazar et Ahimelech de filiis Ithamar secundum vices suas et ministerium

4 inventique sunt multo plures filii Eleazar in principibus viris quam filii Ithamar divisit autem eis hoc est filiis Eleazar principes per familias sedecim et filiis Ithamar per familias et domos suas octo

5 porro divisit utrasque inter se familias sortibus erant enim principes sanctuarii et principes Dei tam de filiis Eleazar quam de filiis Ithamar