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.

22. if ye have erred, and not observed all these commandments, &c.—respecting the performance of divine worship, and the rites and ceremonies that constitute the holy service. The law relates only to any omission and consequently is quite different from that laid down in Le 4:13, which implies a transgression or positive neglect of some observances required. This law relates to private parties or individual tribes; that to the whole congregation of Israel.