'Impurity' in the Bible

and does not eat [at the pagan shrines] on the mountains or raise his eyes to the idols of the house of Israel, or defile his neighbor’s wife or approach a woman during her [monthly] time of impurity—

“Son of man, when the house of Israel was living in their own land, they defiled it by their [own] behavior and by their [idolatrous] actions. Their conduct before Me was like the uncleanness of a woman during her [physical] impurity.