Leviticus 20:15-17

New Century Version

¹⁵ “‘If a man has sexual relations with an animal, he must be put to death. You must also kill the animal. ¹⁶ If a woman approaches an animal and has sexual relations with it, you must kill the woman and the animal. They must be put to death. They have brought it on themselves.

¹⁷ “‘It is shameful for a brother to marry his sister, the daughter of either his father or his mother, and to have sexual relations with her. In front of everyone they must both be cut off from their people. The man has shamed his sister, and he is guilty of sin.