John Gill Bible Commentary

And the priest whom he shall anoint,.... Whom God shall anoint, or shall be anointed, that shall succeed in the high priesthood, as Aaron's sons did, the eldest of them, and none but such were anointed: and whom he shall consecrate; or fill his hands, by putting the sacrifices into them; See Gill on Exo 28:41 andSee Gill on Exo 29:9, Exo 29:24; by which, and by anointing him, and clothing him with the priestly garments, he was consecrated and installed into his office, in order to minister in the priest's office, in his father's stead: a son of an high priest was always preferred to any other, and to him it of right belonged to succeed his father in his office: and such an one, thus consecrated, shall make the atonement; on this day of atonement; not a common priest, but the high priest only; so Jarchi observes, this expiation of the day of atonement was not right but by an high priest; for the whole section is said concerning Aaron, and therefore it must needs be said of an high priest that comes after him, that should be as he was: and shall put on the linen clothes, even the holy garments: that is, on the day of atonement; in which clothes all the service peculiar to that day, as it was done by Aaron, so it was to be done by all his successors.