You must not expose the nakedness of your son’s daughter or your daughter’s daughter by having sexual intercourse with them, because they are your own nakedness. ¹ 

“Tell the Israelites, ‘When a person sins by straying unintentionally ¹  from any of the Lord’s commandments which must not be violated, and violates any ²  one of them ³  –

or has found something lost and denies it and swears falsely ¹  concerning any one of the things that someone might do to sin ²  –

You must not have sexual intercourse with both a woman and her daughter; you must not take as wife either her son’s daughter or her daughter’s daughter to have intercourse with them. ¹  They are closely related to her ²  – it is lewdness. ³