12:1-8 Uncleanness of a Childbearing Mother. A woman who has just given birth is considered unclean. The loss of blood signifies that one is incomplete and unclean. Three steps are required to move from defilement to purity: (1) the woman is to remain unclean for , depending on the gender of the child; (2) she then moves into the second stage, which lasts for in which she is neither pure nor impure; and (3) finally, she offers sacrifices in order to enter into full communion with the covenant people. The time of purification for the mother is twice as long if she gives birth to a female rather than a male. The reason is uncertain, although it may be that the female is potentially more unclean because of the probability of her menstruating and of her giving birth. In any event, there is no implication that the reason for the distinction is any kind of presumed "inferiority" of women.
12:8lamb . . . two turtledoves. Cf. 5:11; and Luke 2:24, indicating the poverty of Jesus' parents.