69. In the Book of Leviticus, chap. 12, it is decreed that a woman who has borne a boy is unclean for seven days and remains for a further thirtythree days in "the blood of her purification." If she has been delivered of a girl, she is unclean for two weeks and remains for sixty-six days "in the blood of her purification." She may not enter the sanctuary before this time has elapsed. When she first enters the temple, she is to bring a prescribed offering.