Exodus 28:1

Aaron - and his sons - The priesthood was to be restrained to this family because the public worship was to be confined to one place; and previously to this the eldest in every family officiated as priest, there being no settled place of worship. It has been very properly observed that, if Moses had not acted by the Divine appointment, he would not have passed by his own family, which continued in the condition of ordinary Levites, and established the priesthood, the only dignity in the nation, in the family of his brother Aaron. "The priests, however, had no power of a secular nature, nor does it appear from history that they ever arrived at any till the time of the Asmoneans or Maccabees." See Clarke's note on Exodus 19:22.

(Compare Exodus 39:1-31.) Moses is now commanded to commit all that pertains to the offerings made to the Lord in the sanctuary to the exclusive charge of the members of a single family, who were to hold their office from generation to generation. In the patriarchal times, the external rites of worship had generally been conducted by the head of the tribe or family, in accordance with the principle involved in the dedication of the firstborn Exodus 13:2; Numbers 3:12-13. Moses, as the divinely-appointed and acknowledged leader of the nation, had, on a special occasion, appointed those who were to offer sacrifice, and had himself sprinkled the consecrating blood of the victims on the people Exodus 24:5-6, Exodus 24:8. On the completion of the tabernacle, after Aaron and his sons had been called to the priesthood, he took chief part in the daily service of the sanctuary Exodus 40:23-29, Exodus 40:31-32 until the consecration of the family of Aaron, on which occasion he appears to have exercised the priest's office for the last time (Leviticus 8:14-29; compare Exodus 29:10-26). The setting apart of the whole tribe of Levi for the entire cycle of religious services is mentioned Numbers 3:5-13; Numbers 8:5-26; Numbers 18:1-32.

Exodus 28:1

Nadab and Abihu, the two older sons of Aaron, had accompanied their father and the seventy Elders when they went a part of the way with Moses up the mountain Exodus 24:1, Exodus 24:9. Soon after their consecration they were destroyed for offering "strange fire before the Lord" Leviticus 10:1-2. Eleazar and Ithamar are here mentioned for the first time, except in the genealogy, Exodus 6:23. Eleazar succeeded his father in the High priesthood, and was himself succeeded by his son Phinehas Judges 20:28. But Eli, the next high priest named in the history, was of the line of Ithamar. The representatives of both families held office at the same time in the days of David. See 1 Chronicles 24:1-3; 2 Samuel 8:17.

28:1 Aaron and his sons — Hitherto every master of a family was priest to his own family. But now the families of Israel began to be incorporated into a nation, and a tabernacle of the congregation was to be erected, as a visible centre of their unity, it was requisite there should be a publick priesthood instituted. Moses, who had hitherto officiated, and is therefore reckoned among the priests of the Lord, Psalms 99:6, had enough to do as their prophet, to consult the oracle for them, and as their prince, to judge among them. Nor was he desirous to ingross all the honours to himself, or to entail that of the priesthood, which alone was hereditary, upon his own family; but was very well pleased to see his brother Aaron invested with this office, and his sons after him; while (how great soever he was) his sons after him would be but common Levites. It is an instance of the humility of that great man, and an evidence of his sincere regard to the glory of God, that he had so little regard to the preferment of his own family. Aaron, that had humbly served as a prophet to his younger brother Moses, and did not decline the office, is now advanced to be a priest to God. God had said to Israel in general, that they should be to him a kingdom of priests; but because it was requisite that those who ministered at the altar should give themselves wholly to the service, God here chose from among them one to be a family of priests, the father and his four sons; and from Aaron's loins descended all the priests of the Jewish church, whom we read of both in the Old Testament and in the New.