John Gill Commentary Exodus 29:16

"And thou shalt slay the ram, and thou shalt take its blood, and sprinkle it round about upon the altar." — Exodus 29:16 (ASV)

And you shall slay the ram
As he was ordered to slay the bullock, acting in this as a priest, as in that:

and you shall take his blood, and sprinkle it round about upon the
altar ;
the blood being received into a basin, it was not to be put upon the altar with the finger, as the blood of the bullock, but was to be sprinkled probably with a bunch of hyssop, round about upon the altar, on the top and sides: as the deity of Christ is the altar which sanctifies every gift, this may signify that his blood has its virtue and efficacy from that, to make atonement for the sins of men, and to cleanse them from them.