But into the second the high priest went alone once every year, not without blood, which he offered for his own ignorance, and for that of the people:

A young

if the priest that is anointed sins according to the guiltiness of the people, he shall offer for his sin, which he has committed, a young bullock without blemish unto the LORD for his sin.

Next he brought the bullock of the sin, and Aaron and his sons laid their hands upon the head of the bullock of the sin,

And ye shall have on the tenth of this seventh month a holy convocation; and ye shall afflict your souls; ye shall not do any work;

A ram for a burnt-offering

If his offering is a burnt sacrifice of the herd, let him offer a male without blemish; he shall offer it of his own free will at the door of the tabernacle of the testimony before the LORD.

After that, he brought the ram of the burnt offering, and Aaron and his sons laid their hands upon the head of the ram,

And unto the sons of Israel thou shalt speak, saying, Take ye a he goat as the sin and a calf and a lamb, both of the first year, without blemish, for a burnt offering;

General references

And Aaron shall cause the bullock of his own sin to be brought and shall make the reconciliation for himself and for his house and shall kill the bullock of his own sin.