Reference

Leviticus 15:19

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.
17

And every garment, and every skin, whereon is the seed of copulation, shall be washed with water, and be unclean until the even.

18

The woman also with whom man shall lie with seed of copulation, they shall both bathe themselves in water, and be unclean until the even.

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.

Counter-Arguments

The strongest case that this verse does not belong in this theme.

Pre-Law Clean/Unclean Distinction

This verse is found within the book of Leviticus, which is part of the Mosaic Law given at Sinai, not prior to it. Therefore, it describes a clean/unclean distinction *within* the Law, not one that existed before it.

Symbolic / Spiritual Interpretation

The verse describes a physical state ("issue in her flesh be blood") and its immediate, tangible consequence ("unclean until the even") without any explicit language suggesting a symbolic meaning for spiritual purity or moral holiness. The "unclean" status here appears to be a ritual or physical designation, not a spiritual one.