Leviticus 18:10

10 You must not have sexual relations with your son’s daughter or your daughter’s daughter, for that would shame your family.

Leviticus 18:10 Meaning and Commentary

Leviticus 18:10

The nakedness of thy son's daughter, or of thy daughter's
daughter
A man might not marry his granddaughter, whether a descendant of his son or of his daughter, nor any further off descending from him in a right line, not his great-granddaughter, and so on; and if he might not marry his granddaughter, much less his own daughter, as Jarchi observes, for the relation is still nearer; therefore that being prohibited, this in course must, though not mentioned: [even] their nakedness thou shalt not uncover;
neither debauch nor marry such an one: for theirs [is] thine own nakedness;
which sprung from his, being the descendants either of his son or daughter; the Targum of Jonathan is,

``for they are as thy nakedness,''

his own flesh and blood.

Leviticus 18:10 In-Context

8 You must not have sexual relations with your father’s wife; it would dishonor your father.

9 You must not have sexual relations with your sister, either your father’s daughter or your mother’s daughter, whether she was born in the same home or elsewhere.

10 You must not have sexual relations with your son’s daughter or your daughter’s daughter, for that would shame your family.

11 You must not have sexual relations with the daughter of your father’s wife, born to your father; she is your sister.

12 You must not have sexual relations with your father’s sister; she is your father’s close relative.