Leviticus 20:19-21

Context
20:19 You must not expose the nakedness of your mother’s sister and your father’s sister, for such a person has laid bare his own close relative. ¹  They must bear their punishment for iniquity. ²  20:20 If a man has sexual intercourse with his aunt, he has exposed his uncle’s nakedness; they must bear responsibility for their sin, they will die childless. 20:21 If a man has sexual intercourse with ³  his brother’s wife, it is indecency. He has exposed his brother’s nakedness; ⁴  they will be childless.