Aaron took to wife Elisheba means “Aaron married Elisheba” (Good News Translation). (See verse 20.) The daughter of Amminadab and sister of Nahshon identifies Elisheba as coming from the tribe of Judah rather than the tribe of Levi (Num 1.7 and Ruth 4.19-20). And she bore him is the same expression as that in verse 20. Nadab, Abihu, Eleazar, and Ithamar were the four sons of Aaron who were later consecrated with him as priests. Eleazar succeeded Aaron as chief priest (Num 20.25-28).

Quoted with permission from Osborn, Noel D. and Hatton, Howard A. A Handbook on Exodus. (UBS Helps for Translators). New York: UBS, 1999. For this and other handbooks for translators see here .