Leviticus 18:15

15 " 'Do not have sex with your daughter-in-law. She is your son's wife. Do not have sex with her.

Leviticus 18:15 Meaning and Commentary

Leviticus 18:15

Thou shall not uncover the nakedness of thy daughter in law,
&c.] Shall not he with her in his son's lifetime, or marry her after his death: she [is] that son's wife;
and so one flesh with him, and who is of the same flesh and blood with his father, and therefore the nearness of the relation forbids such incestuous copulation or marriage: thou shall not uncover her nakedness;
or have carnal knowledge of her, whether in the life or after the death of his son, even then marriage with her is not lawful.

Leviticus 18:15 In-Context

13 " 'Do not have sex with your mother's sister. She is a close relative on your mother's side.

14 " 'Do not bring shame on your father's brother by having sex with his wife. She is your aunt.

15 " 'Do not have sex with your daughter-in-law. She is your son's wife. Do not have sex with her.

16 " 'Do not have sex with your brother's wife. That would bring shame on your brother.

17 " 'Do not have sex with both a woman and her daughter. Do not have sex with either her son's daughter or her daughter's daughter. They are close relatives on her side. Having sex with them is an evil thing.