וַיִּקַּ֨ח אַהֲרֹ֜ן אֶת־אֱלִישֶׁ֧בַע בַּת־עַמִּינָדָ֛ב אֲח֥וֹת נַחְשׁ֖וֹן ל֣וֹ לְאִשָּׁ֑ה וַתֵּ֣לֶד ל֗וֹ אֶת־נָדָב֙ וְאֶת־אֲבִיה֔וּא אֶת־אֶלְעָזָ֖ר וְאֶת־אִֽיתָמָֽר׃
And Aaron took him Elisheba, the daughter of Amminadab, the sister of Nahshon, to wife; and she bore him Nadab and Abihu, Eleazar and Ithamar.
Read halakhic rulings (Jewish law) on Exodus 6:23: and classical halakhic sources.