Leviticus 12:2

2.If a woman have conceived seed. This ceremony had reference to two points; for, first, the Jews were reminded by it of the common corruption of our nature; and secondly, the remedy of the evil was set before them. There is little difficulty in understanding why a woman who has conceived and given birth to a child, should be pronounced unclean; viz., because the whole race of Adam is polluted and defiled, so that the woman already contracts uncleanness from the offspring which she bears in the womb, and is further contaminated by giving it birth. Hence it appears how foul and disgusting in God’s sight is our condition, since at our birth, and even before it, we infect our mothers. It has been almost universally, but very absurdly, considered that nothing is here condemned but libidinous intercourse between male and female; whereas the purification is not required except there be offspring; and to this the word תזריע, thazriang, refers, which can only be properly translated by insemination, and therefore it must be carefully observed that impurity in intercourse is not generally condemned here, but in generation. For the cohabitation of man and woman in itself, without reference to offspring, is a matter of shame and indecency; but here the procreation of children, which should remove this indecency, is accounted the cause of pollution, because the whole race of Adam is full of contagion. Hence the error of Pelagius (341) is clearly refuted, who denied that the sin of Adam was propagated among his descendants, and pretended that we contracted sin from our parents not by origin, but by imitation. For the mother would not be unclean if the children were pure and free from all defilement. Therefore God would by this rite teach His ancient, people that all men are born accursed, and bring into the world with them an hereditary corruption which pollutes their very mothers. If any object that holy matrimony is thus brought into disgrace and disrepute, the reply is easy, that if the marriage couch is free from stain, it is due to the indulgence of God. When therefore the husband and wife procreate children in lawful wedlock, it is not to be considered simply permitted, as if the generation were altogether without impurity, but by special privilege and indulgence; because the sanctity of marriage covers what otherwise might be imputed to blame, and purifies the very defilements of our guilty nature. Whence it is plain that marriage, through which the procreation of children becomes lawful, has nothing disgraceful about it. Yet it does not follow that the children who are thus engendered are holy and free from stain; for those who are born to unbelievers, remain under the guilt of the curse; and those who owe their birth to believers, are delivered from the common perdition by supernatural grace, and special adoption. And this God desired openly and distinctly to testify, by requiring a sacrifice for their purification. For although Moses seems only to speak of the mother, St. Luke, (342) his faithful interpreter, includes also the infant. If it be asked whether circumcision would not suffice to remove the stain of corrupt nature, I reply that hence it more clearly appears how great is our impurity, since God was not content with one symbol for its expurgation, but in order that He might exercise His people in continual meditation upon it, added another subsidiary sign, and did this especially because He knew how profound is men’s hypocrisy, with what self-complacency they flatter themselves in vice, how difficult it is to humble their pride, and, when they are forced to acknowledge their miseries, how easily forgetfulness creeps over them. Wherefore, when circumcision is expressly mentioned here, I presume it is by anticipation, lest the Israelites should object that circumcision was given them for the very purpose of altogether removing the curse; and therefore God signifies that, although circumcision should precede it, still the purification which He here enjoins would not be superfluous. The foolish comments of the Rabbins on this passage respecting seed, are both ridiculous in themselves, and unfitted by their filthiness for modest ears; since, as we have said, the simple intention of Moses was that the woman should undergo purification, if offspring should follow her intercourse. Now, since the Son of God, although He was not only pure, but purity itself, still was the representative of the human race, He subjected himself to the Law; and (as Paul teaches) submitted Himself to the Law, “to redeem them that were under the Law.” ( Galatians 3:13) And, by this His voluntary submission to it, He abrogated the old rite; so that it is not now necessary to bring infants to the visible tabernacle with the sacrifices, but all purity is to be sought in Himself.