Leviticus 18:14-16

¹⁴Thou shalt not uncover the nakedness of thy father’s brother, and thou shalt not go in to his wife; for she is thy relation.

¹⁵Thou shalt not uncover the nakedness of thy daughter-in-law, for she is thy son’s wife, thou shalt not uncover her nakedness.

¹⁶Thou shalt not uncover the nakedness of thy brother’s wife: it is thy brother’s nakedness.