Leviticus 12:7

make atonement for her: Here “atonement” means ceremonial cleansing and making peace between the worshiper and God (see Leviticus 4:20; also refer to study note on 1:4).

These verses explain the rules about childbirth. Any bodily discharge, including blood, was "abnormal" because it weakened the person and made them ceremonially unclean (see study notes on Leviticus 5:3; 11:1–15:33). These verses focus on the discharge that comes with childbirth, not childbirth itself (12:2, 5, 7). The uncleanness was not sinful unless they ignored it and it came into contact with something holy (see 5:2–3).

the days of her purifying--Though the occasion was of a festive character, yet the sacrifices appointed were not a peace offering, but a burnt offering and sin offering, in order to impress the mind of the parent with recollections of the origin of sin, and that the child inherited a fallen and sinful nature. The offerings were to be presented the day after the period of her separation had ended--that is, forty-first for a boy, eighty-first for a girl.

A woman that had lain in, when the time set for her return to the sanctuary had come, was not to attend there empty, but must bring her offerings, Lev 12:6. 1. A burnt-offering; a lamb if she was able, if poor, a pigeon. This she was to offer in thankfulness to God for his mercy to her, in bringing her safely through the pains of child-bearing and all the perils of child-bed, and in desire and hopes of God's further favour both to her and to the child. When a child is born there is joy and there is hope, and therefore it was proper to bring this offering, which was of a general nature; for what we rejoice in we must give thanks for, and what we are in hopes of we must pray for. But, besides this, 2. She must offer a sin-offering, which must be the same for poor and rich, a turtle-dove or a young pigeon; for, whatever difference there may be between rich and poor in the sacrifices of acknowledgment, that of atonement is the same for both. This sin-offering was intended either, (1.) To complete her purification from that ceremonial uncleanness which, though it was not in itself sinful, yet was typical of moral pollution; or, (2.) To make atonement for that which was really sin, either an inordinate desire of the blessing of children or discontent or impatience under the pains of child-bearing. It is only by Christ, the great sin-offering, that the corruption of our nature is done away, and to that it is owing that we are not for ever excluded by it from the sanctuary, and from eating of the holy things. According to this law, we find that the mother of our blessed Lord, though he was not conceived in sin as others, yet accomplished the days of purification, and then presented her son to the Lord, being a first-born, and brought her own offering, a pair of turtle-doves, Luk 2:22-24. So poor were Christ's parents that they were not able to bring a lamb for a burnt-offering; and so early was Christ made under the law, to redeem those that were under it. The morality of this law obliges those women that have received mercy from God in child-bearing with all thankfulness to own God's goodness to them, acknowledging themselves unworthy of it, and (which is the best purification of women that have been saved in child-bearing, Ti1 2:15) to continue in faith, and charity, and holiness, with sobriety; for this shall please the Lord better than the turtle-doves or the young pigeons.

When the days of her purifying - It is not easy to account for the difference in the times of purification, after the birth of a male and female child. After the birth of a boy the mother was considered unclean for forty days; after the birth of a girl, four-score days. There is probably no physical reason for this difference, and it is difficult to assign a political one. Some of the ancient physicians assert that a woman is in the order of nature much longer in completely recovering after the birth of a female than after the birth of a male child. This assertion is not justified either by observation or matter of fact. Others think that the difference in the time of purification after the birth of a male and female is intended to mark the inferiority of the female sex. This is a miserable reason, and pitifully supported.
She shall bring - a burnt-offering, and - a sin-offering - It is likely that all these ordinances were intended to show man's natural impurity and original defilement by sin, and the necessity of an atonement to cleanse the soul from unrighteousness.

Who shall offer it before the Lord,.... Upon the altar of burnt offering:

and make an atonement for her; for whatsoever sin in connection with or that attended childbearing; as typical of the atonement by Christ both for sin original and actual:

and she shall be cleansed from the issue of her blood; in a ceremonial sense, and according to that law be pure and clean:

this is the law for her that hath born a male or a female; enjoined her, and to be observed by her; and though now with the rest of the ceremonial law it is abolished, yet it has this instruction in it; that it becomes women in such circumstances to bring the freewill offerings of their lips, their sacrifices of praise, and in a public manner signify their gratitude and thankfulness for the mercy and goodness of God vouchsafed to them, in carrying them through the whole time of childbearing, and saving them in the perilous hour.

For though there was a difference in the time of her uncleanness for the one and for the other, yet both were to be purl fled one and the same way; to note, that though all sins and sinners were not equal, yet all were to be cleansed by the same means, to wit, by Christ, and by faith. See .

After the expiration of the days of her purification "with regard to a son or a daughter," i.e., according as she had given birth to a son or a daughter (not for the son or daughter, for the woman needed purification for herself, and not for the child to which she had given birth, and it was the woman, not the child, that was unclean), she was to bring to the priest a yearling lamb for a burnt-offering, and a young pigeon or turtle-dove for a sin-offering, that he might make atonement for her before Jehovah and she might become clean from the course of her issue. שׁנתו בּן, lit., son of his year, which is a year old (cf. Lev 23:12; Num 6:12, Num 6:14; Num 7:15, Num 7:21, etc.), is used interchangeably with שׁנה בּן (Exo 12:5), and with שׁנה בּני in the plural (Lev 23:18-19; Exo 29:38; Num 7:17, Num 7:23, Num 7:29). דּמים דּמור, fountain of bleeding (see at Gen 4:10), equivalent to hemorrhage (cf. Lev 20:18). The purification by bathing and washing is not specially mentioned, as being a matter of course; nor is anything stated with reference to the communication of her uncleanness to persons who touched either her or her couch, since the instructions with regard to the period of menstruation no doubt applied to the first seven and fourteen days respectively. For her restoration to the Lord and His sanctuary, she was to come and be cleansed with a sin-offering and a burnt-offering, on account of the uncleanness in which the sin of nature had manifested itself; because she had been obliged to absent herself in consequence for a whole week from the sanctuary and fellowship of the Lord. But as this purification had reference, not to any special moral guilt, but only to sin which had been indirectly manifested in her bodily condition, a pigeon was sufficient for the sin-offering, that is to say, the smallest of the bleeding sacrifices; whereas a yearling lamb was required for a burnt-offering, to express the importance and strength of her surrender of herself to the Lord after so long a separation from Him. But in cases of great poverty a pigeon might be substituted for the lamb (Lev 12:8, cf. Lev 5:7, Lev 5:11).