Leviticus 20:16-21

¹⁶If a woman approaches any animal to sleep with it, you must kill the woman and the animal. They must certainly be put to death. They are guilty and deserve to die.

¹⁷If a man sleeps with his sister, a daughter of his father or a daughter of his mother, and he uncovers her nakedness, and she sees his nakedness, it is a shameful thing. They must be cut off from the presence of their people, because he has slept with his sister. He must carry his guilt.

¹⁸If a man sleeps with a woman during her menstrual period and has slept with her, he has uncovered the flow of her blood, the source of her blood. Both the man and woman must be cut off from among their people.

¹⁹You must not sleep with your mother's sister, or with your father's sister, because you would disgrace your close relative. You must carry your own guilt.

²⁰If a man sleeps with his aunt, he has dishonored his uncle. They will bear responsibility for their sin, and they will die without children.

²¹If a man marries his brother's wife while his brother is still living, that is disgraceful. He has dishonored his brother, and I will take away from their children any property they may have inherited from their parents.