Exodus 28:35

“And it shall be upon Aaron to minister, etc.] That is, the robe before described shall be put upon him, that he might minister in the priest’s office, for without this, as well as the other garments, he might not: and his sound shall be heard when he goeth in unto the holy place before the Lord, and when he cometh out; by means of which the priests would have notice that they might depart, and he be alone in his ministrations; or rather, that the people might know his going out and coming in, and so give themselves up to prayer, while he was offering incense, (see <420109>Luke 1:9,10) though the instance of Zacharias is not of an high priest, but of a common priest: that he die not the…”

“(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…”

“goeth in: Lev 16:2; Heb 9:12 Exodus 28:36”