Leviticus 18:6-10

⁶You may not have sex connection with anyone who is a near relation: I am the Lord.

⁷You may not have sex relations with your father or your mother: she is your mother, you may not take her.

⁸And you may not have sex relations with your father's wife: she is your father's.

⁹You may not take your sister, the daughter of your father or of your mother, wherever her birth took place, among you or in another country.

¹⁰You may not have sex relations with your son's daughter or your daughter's daughter, for they are part of yourself;