And the priest shall offer them, the one [for] a sin
offering, and the other [for] a burnt offering
As in the case of a new mother who is poor, and of a poor leper, ( Leviticus 12:8 ) ( 14:22 ) ; and the priest shall make atonement for him before the Lord for his
issue;
which, though not in itself sinful, yet might be occasioned by sin, for which the atonement was made: or, however, it was a ceremonial uncleanness, and therefore a ceremonial expiation must he made for it, typical of the atonement by the blood and sacrifice of Christ, by which all kinds of sin is expiated and removed.
The Brenton translation of the Septuagint is in the public domain.