'Impurity' in the Bible

But if she gives birth to a female child, then she shall be unclean for two weeks, as during her monthly period, and she shall remain [intimately separated] sixty-six days to be purified from the blood.

‘When a woman has a discharge, if her bodily discharge is blood, she shall continue in her menstrual impurity for seven days; and whoever touches her shall be unclean until evening.

If a man actually lies with her so that her menstrual impurity is on him, he shall be unclean for seven days; and every bed on which he lies shall be unclean.

‘Now if a woman has a flow of blood for many days, not during the time of her menstruation, or if she has a discharge beyond that period, as long as the impure discharge continues she shall be as she is in the days of her [normal] menstrual impurity; she is unclean.

Every bed on which she lies during the time of her discharge shall be to her like the bed of her menstrual impurity, and whatever she sits on shall be unclean, like the uncleanness of her monthly period.

and for the woman who is ill because of her monthly period, and for the one who has a discharge, whether man or woman, or for a man who lies with a woman who is [ceremonially] unclean.

If a man takes his brother’s wife, it is a hated and unclean thing; he has uncovered his brother’s nakedness. They will be childless.