15:22-29 Though ignorance will in a degree excuse, it will not justify those who might have known their Lord's will, yet did it not. David prayed to be cleansed from his secret faults, those sins which he himself was not aware of. Sins committed ignorantly, shall be forgiven through Christ the great Sacrifice, who, when he offered up himself once for all upon the cross, seemed to explain one part of the intention of his offering, in that prayer, Father, forgive them, for they know not what they do. It looked favourably upon the Gentiles, that this law of atoning for sins of ignorance, is expressly made to extend to those who were strangers to Israel.You shall have one law for him that sinneth through ignorance,.... Which enjoins a she goat for a sin offering for such:

both for him that is born amongst the children of Israel, and for the stranger that sojourneth among them; both sinning through ignorance, the same sacrifice was offered for them, by which atonement was made, and through which their sin was forgiven; by whom are meant homeborn Israelites and proselytes of righteousness, who were under the same laws, and enjoyed the same privileges, as do now believing Jews and Gentiles.