“You shall not approach a woman to uncover her nakedness while she is in her menstrual uncleanness.
Here is, I. A law to preserve the honour of the marriage-bed, that it should not be unseasonably used (Lev 18:19), nor invaded by an adulterer, Lev 18:20. II. A law against that which was the most unnatural idolatry, causing their children to pass through the fire to Moloch, Lev 18:21.
Commenting on Leviticus 18:19-30
Also thou shall not approach unto a woman,.... Not even a man to his own wife, and much less to another woman: to uncover her nakedness, as long as she is put apart for her uncleanness; in her monthly courses; and the time of her separation from her husband on that account was seven days, Lev 15:19; if a man lay with a woman when...
Also thou shalt not approach unto a woman to uncover her nakedness, as long as she is put apart for her uncleanness. (k) Or while she has her period.