1. This is the family history of Aaron and Moses at the time the Lord talked to Moses on Mount Sinai.
2. Aaron had four sons. Nadab was the firstborn son. Then there were Abihu, Eleazar, and Ithamar.
3. These sons were the chosen priests. They were given the special work of serving the Lord as priests.
12-13. “I destroyed all the firstborn in Egypt. At that time I chose all the firstborn from every family in Israel to be mine in a special way. That included all the firstborn men and animals. But now I am choosing the Levites to take their place. Now they will be my special servants. I, the Lord, give this command!”