Don't have sex with your daughter-in-law
“Those are mine!” Judah admitted. “She's a better person than I am, because I broke my promise to let her marry my son Shelah.” After this, Judah never slept with her again.
or with someone else's wife. Some men even sleep with their own daughter-in-law or half-sister.
It isn't natural to have sex with your daughter-in-law, and both of you will be put to death, just as you deserve.