King James Version (KJV)
But Nadab and Abihu died before their father, and had no children: therefore Eleazar and Ithamar executed the priest's office.
Modern English
But Nadab and Abihu died before their father and had no children, so Eleazar and Ithamar served as priests.
Hebrew
וַיָּ֣מָת נָדָ֤ב וַאֲבִיהוּא֙ לִפְנֵ֣י אֲבִיהֶ֔ם וּבָנִ֖ים לֹ֣א הָֽיוּ לָהֶ֑ם וַיְכַהֲנ֖וּ אֶלְעָזָ֥ר וְאִיתָמָֽר׃
vayamat nadab vaʾabiyhvʾ lipney ʾabiyhem vbaniym loʾ hayv lahem vaykahanv ʾelʿazar vʾiytamar