Exodus 29:21

And thou shalt take of the blood that is upon the altar,.... Not that which was sprinkled upon it, which could not be gathered up in such quantities as to be sprinkled again; but which was in a basin on it, having been received into it when the ram was slain:

and of the anointing oil; hereafter to be made, and with which Aaron was anointed as soon as he had his garments on; and this is a different anointing from that that was poured on his head; this was sprinkled on his garments, as follows:

and sprinkle it upon Aaron; both the blood and the oil:

and upon his garments; the note of Aben Ezra is, under the garments of Aaron, and on his garments, as if they were sprinkled within and without:

and upon his sons, and upon the garments of his sons with him; at his first unction his sons do not seem to have been anointed at all, but now they and their garments are sprinkled both with blood and oil; denoting both the justification of the priests of the Lord by the blood of Christ, and the sanctification of them by the Spirit, and the need that both their persons and their actions stand in of cleansing by them both:

and he shall be hallowed, and his garments, and his sons, and his sons' garments with him: all should be holy in a ceremonial sense, and devoted to holy uses and services; see Psalms 45:8.