Matthew Poole and continuators on Leviticus 15:24

24 And if any man lie with her at all, and her flowers be upon him, he shall be unclean seven dayes : and all the bed whereon he lieth shall be unclean.

If he did this unwittingly; but if the Man and Woman did this knowingly, this was a gross sin, Ezek. 18. 6. and they being accused and convicted were punished with death, Levit. 20. 18. for as there was a turpitude in the action, so it was very prejudicial to the children then begotten, who were commonly weak, or leprous or otherwise disordered, which was also an injury to the Commonwealth of Israel, and redounded to the dishonour of God and of the true Religion, that the professours thereof gave such publick evidence of their intemperance.