3:1-13 There was much work belonging to the priests' office, and there were now only Aaron and his two sons to do it; God appoints the Levites to attend them. Those whom God finds work for, he will find help for. The Levites were taken instead of the first-born. When He that made us, saves us, as the first-born of Israel were saved, we are laid under further obligations to serve him faithfully. God's right to us by redemption, confirms the right he has to us by creation.The "generations" (see Genesis 2:4) now given, though entitled those of Aaron and Moses (Aaron standing first as the older brother), are those of Aaron only. The personal dignity of Moses, though it gave him rank as at the head of his tribe, was not hereditary. He had, and desired to have Numbers 14:12; Exodus 32:10, no successor in his office but the distant prophet like unto himself Deuteronomy 18:18. Aaron was the ancestor of a regular succession of priests. 2-4. And these are the names of the sons of Aaron—All the sons of Aaron, four in number, were consecrated to minister in the priest's office. The two oldest enjoyed but a brief term of office (Le 10:1, 2; Nu 3:4; 26:61); but Eleazar and Ithamar, the other two, were dutiful, and performed the sacred service during the lifetime of their father, as his assistants, and under his superintendence. No text from Poole on this verse.

And these are the names of the sons of Aaron,.... The Targum of Jonathan adds, disciples of Moses, the master of the Israelites; none of the posterity of Moses being expressly, named; Jarchi observes, that the sons of Aaron are called the generations of Moses, because he taught them the law; for whoever, he says, teaches his neighbour's son, the law, the Scripture accounts of him as if he begat him, see 1 Corinthians 4:15,

Nadab the firstborn, and Abihu, Eleazar and Ithamar; as in Exodus 6:23.

And these are the names of the sons of Aaron; Nadab the firstborn, and Abihu, Eleazar, and Ithamar.