"19 And if a woman have an issue, and her issue in her flesh be blood, she shall be put apart seven days: and whosoever toucheth her shall be unclean until the even. 20 And every thing that she lieth upon in her separation shall be unclean: every thing also that she sitteth upon shall be unclean. 21 And whosoever toucheth her bed shall wash his clothes, and bathe himself in water, and be unclean until the even. 22 And whosoever toucheth any thing that she sat upon shall wash his clothes, and bathe himself in water, and be unclean until the even. 23 And if it be on her bed, or on any thing whereon she sitteth, when he toucheth it, he shall be unclean until the even. 24 And if any man lie with her at all, and her flowers be upon him, he shall be unclean seven days; and all the bed whereon he lieth shall be unclean. 25 And if a woman have an issue of her blood many days out of the time of her separation, or if it run beyond the time of her separation; all the days of the issue of her uncleanness shall be as the days of her separation: she shall be unclean. 26 Every bed whereon she lieth all the days of her issue shall be unto her as the bed of her separation: and whatsoever she sitteth upon shall be unclean, as the uncleanness of her separation. 27 And whosoever toucheth those things shall be unclean, and shall wash his clothes, and bathe himself in water, and be unclean until the even. 28 But if she be cleansed of her issue, then she shall number to herself seven days, and after that she shall be clean. 29 And on the eighth day she shall take unto her two turtles, or two young pigeons, and bring them unto the priest, to the door of the tabernacle of the congregation. 30 And the priest shall offer the one for a sin offering, and the other for a burnt offering; and the priest shall make an atonement for her before the LORD for the issue of her uncleanness. 31 Thus shall ye separate the children of Israel from their uncleanness; that they die not in their uncleanness, when they defile my tabernacle that is among them. 32 This is the law of him that hath an issue, and of him whose seed goeth from him, and is defiled therewith; 33 And of her that is sick of her flowers, and of him that hath an issue, of the man, and of the woman, and of him that lieth with her that is unclean." — Leviticus 15:19-33 KJV.
The separation of the woman during the menstrual period is so obviously a sanitary requirement that the custom was not confined to the Hebrews.
19. Seven days — This is sufficient to cover the ordinary period of physical impurity. It is worthy of note that no ceremonial cleansing or atonement is required at the expiration of this normal uncleanness, as there is after the healing of an abnormal issue. See verses 25 and 30. Toucheth — This word is used in its common signification, and not in the Pauline sense, (1 Corinthians 7:1,) which is treated of in verse 24, and especially in Leviticus 20:18, where the penalty of excision is attached.
