12:2, 5​—Why did childbirth make a woman “unclean”? The reproductive organs were made to pass on perfect human life. However, because of the inherited effects of sin, imperfect and sinful life was passed on to the offspring. The temporary periods of ‘uncleanness’ associated with childbirth, as well as other matters, such as menstruation and seminal emissions, called this hereditary sinfulness to mind. (Leviticus 15:16-24; Psalm 51:5; Romans 5:12) The required purification regulations would help the Israelites to appreciate the need for a ransom sacrifice to cover mankind’s sinfulness and restore human perfection. Thus the Law became their “tutor leading to Christ.”​—Galatians 3:24.