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.

Leviticus 20:17

20:17 “‘If a man has sexual intercourse with his sister, whether the daughter of his father or his mother, so that he sees her nakedness and she sees his nakedness, it is a disgrace. They must be cut off in the sight of the children of their people. He has exposed his sister’s nakedness; he will bear his punishment for iniquity.

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 13:1

13:1 Suppose a prophet or one who foretells by dreams should appear among you and show you a sign or wonder,

Deuteronomy 13:14

13:14 You must investigate thoroughly and inquire carefully. If it is indeed true that such a disgraceful thing is being done among you,

Deuteronomy 13:1

13:1 Suppose a prophet or one who foretells by dreams should appear among you and show you a sign or wonder,

Deuteronomy 13:1

13:1 Suppose a prophet or one who foretells by dreams should appear among you and show you a sign or wonder,