4:13-21 If the leaders of the people, through mistake, caused them to err, an offering must be brought, that wrath might not come upon the whole congregation. When sacrifices were offered, the persons, on whose behalf they were devoted, were to lay their hands on the heads of the victims, and to confess their sins. The elders were to do so, when the sacrifices were offered for the whole congregation. The load of sin was supposed then to be borne by the guiltless animal. When the offering is completed, it is said, atonement is made, and the sin shall be forgiven. The saving of churches and kingdoms from ruin, is owing to the satisfaction and mediation of Christ.And the priest that is anointed shall bring of the bullock's blood,.... That is, the chief priest, as the Targums of Onkelos and Jonathan explain it:

to the tabernacle of the congregation; as he brought the blood of his own bullock, Leviticus 4:5 from hence to the Leviticus 4:16 an account is given of the same rites to be observed in the sin offering, for the congregation, as for the anointed priest; See Gill on Leviticus 4:6, Leviticus 4:7, Leviticus 4:12.