Leviticus 18
7 Ref You may not have sex relations with your father or your mother: she is your mother, you may not take her.
8 Ref And you may not have sex relations with your father's wife: she is your father's.
9 Ref You 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.
10 You may not have sex relations with your son's daughter or your daughter's daughter, for they are part of yourself;
11 Or your father's wife's daughter, the child of your father, for she is your sister.
12 Ref You may not have sex connection with your father's sister, for she is your father's near relation.
13 You may not have sex connection with your mother's sister, for she is your mother's near relation.
14 Ref You may not have sex relations with the wife of your father's brother, for she is of your family;
15 Ref Or with your daughter-in-law, for she is your son's wife, and you may not take her.
16 Ref You may not have sex relations with your brother's wife, for she is your brother's.
17 Ref You may not take as wife a woman and her daughter, or her son's daughter or her daughter's daughter, for they are of one family: it is an act of shame.
18 Ref And you may not take as wife a woman and at the same time her sister, to be in competition with her in her life-time.
19 Ref And you may not go near a woman or have sex relations with her when she is unclean, at her regular time.