Adam Clarke's Commentary on the Bible - Leviticus 12:6
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... read more
Adam Clarke's Commentary on the Bible - Leviticus 12:4
The blood of her purifying - A few words will make this subject sufficiently plain. God designs that the human female should bring forth children. That children should derive, under his providence, their being, all their solids and all their fluids, in a word, the whole mass of their bodies, from the substance of the mother. For this purpose he has given to the body of the female an extra quantity of blood and nutritious juices. Before pregnancy this superabundance is evacuated at... read more