1 Chronicles 24:1

1 The divisions of the descendants of Aharon were as follows: The sons of Aharon: Nadav, Avihu, El'azar and Itamar.

1 Chronicles 24:1 Meaning and Commentary

1 Chronicles 24:1

Now these are the divisions of the sons of Aaron
Into the classes or courses following:

the sons of Aaron; Nadab and Abihu, Eleazar and Ithamar;
( 1 Chronicles 6:3 ) , these were the immediate sons of Aaron; but the division or distribution of them into classes are of their posterity in the times of David, who descended from the two latter.

1 Chronicles 24:1 In-Context

1 The divisions of the descendants of Aharon were as follows: The sons of Aharon: Nadav, Avihu, El'azar and Itamar.

2 But Nadav and Avihu died before their father and had no children; therefore El'azar and Itamar functioned as the cohanim.

3 David, together with Tzadok from the descendants of El'azar, and Achimelekh from the descendants of Itamar, arranged them in divisions for service.

4 There were more men who were chiefs found among the descendants of El'azar than among the descendants of Itamar; therefore there were sixteen divisions of the descendants of El'azar, headed by clan leaders, and eight divisions of the descendants of Itamar, according to their clans.

5 They were assigned [periods of service] by lot, the one group equally with the other, since both the descendants of El'azar and the descendants of Itamar had officers of the sanctuary and officers of God.