1 Chronicles 24:2

2 And Nadab and Abihu died before their father, and had no children; and Eleazar and Ithamar exercised the priesthood.

1 Chronicles 24:2 Meaning and Commentary

1 Chronicles 24:2

But Nadab and Abihu died before their father
While he was living, see ( Leviticus 10:1 Leviticus 10:2 )

and had no children, therefore Eleazar and Ithamar executed the
priests' office:
otherwise, as Jarchi observes, had their brethren left children, they would have come into the office before them.

1 Chronicles 24:2 In-Context

1 And the divisions of the sons of Aaron: the sons of Aaron, Nadab and Abihu, Eleazar and Ithamar.

2 And Nadab and Abihu died before their father, and had no children; and Eleazar and Ithamar exercised the priesthood.

3 And David distributed them, both Zadok of the sons of Eleazar, and Ahimelech of the sons of Ithamar, according to their office in their service.

4 And there were more head-men found of the sons of Eleazar than of the sons of Ithamar, and [thus] were they divided: of the sons of Eleazar there were sixteen heads of fathers' houses, and eight of the sons of Ithamar according to their fathers' houses.

5 And they were divided by lot, one with another; for the princes of the sanctuary and the princes of God were of the sons of Eleazar and of the sons of Ithamar.