Leviticus 18:9

18:9 You must not have sexual intercourse with your sister, whether she is your father’s daughter or your mother’s daughter, whether she is born in the same household or born outside it; you must not have sexual intercourse with either of them.

Genesis 20:12

20:12 What’s more, she is indeed my sister, my father’s daughter, but not my mother’s daughter. She became my wife.

Deuteronomy 27:22

27:22 ‘Cursed is the one who has sexual relations with his sister, the daughter of either his father or mother.’ Then all the people will say, ‘Amen!’

Deuteronomy 27:2

27:2 When you cross the Jordan River to the land the Lord your God is giving you, you must erect great stones and cover them with plaster.

Deuteronomy 13:12

Punishment of Community Idolatry

13:12 Suppose you should hear in one of your cities, which the Lord your God is giving you as a place to live, that

Ezekiel 22:11

22:11 One commits an abominable act with his neighbor’s wife; another obscenely defiles his daughter-in-law; another violates his sister – his father’s daughter – within you.