New American Standard Bible (NASB)
Numbers 2
31 The total of the numbered men of the camp of Dan was 157,600. They shall set out last by their standards."
32 These are the numbered men of the sons of Israel by their fathers’ households; the total of the numbered men of the camps by their armies, 603,550.
33 The Levites, however, were not numbered among the sons of Israel, just as the Lord had commanded Moses.
34 Thus the sons of Israel did; according to all that the Lord commanded Moses, so they camped by their standards, and so they set out, every one by his family according to his father’s household.
Numbers 3
1 Now these are the records of the generations of Aaron and Moses at the time when the Lord spoke with Moses on Mount Sinai.
2 These then are the names of the sons of Aaron: Nadab the firstborn, and Abihu, Eleazar and Ithamar.
3 These are the names of the sons of Aaron, the anointed priests, whom he ordained to serve as priests.
4 But Nadab and Abihu died before the Lord when they offered strange fire before the Lord in the wilderness of Sinai; and they had no children. So Eleazar and Ithamar served as priests in the lifetime of their father Aaron.
5 Then the Lord spoke to Moses, saying,
6 "Bring the tribe of Levi near and set them before Aaron the priest, that they may serve him.
7 They shall perform the duties for him and for the whole congregation before the tent of meeting, to do the service of the tabernacle.