The phrase “unclean” and “abomination” are different words. The reason that God introduces certain animals clean and fit to eat versus unclean and unfit to eat is a lesson to us to look at the character of the animals. The length of a woman’s purification is twice as long for a female child as a male child. Liberals claim this is about a lack of thankfulness for the female child, but the real issue is the health of the mother after childbirth.