Leviticus 18:10

10 You are not to have sexual relations with your son's daughter or with your daughter's daughter. Do not have sexual relations with them, because their sexual disgrace will be your own.

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 are not to have sexual relations with your father's wife; that is your father's prerogative.

9 You are not to have sexual relations with your sister, the daughter of your father or the daughter of your mother, whether born at home or elsewhere. Do not have sexual relations with them.

10 You are not to have sexual relations with your son's daughter or with your daughter's daughter. Do not have sexual relations with them, because their sexual disgrace will be your own.

11 You are not to have sexual relations with your father's wife's daughter, born to your father, because she is your sister; do not have sexual relations with her.

12 You are not to have sexual relations with your father's sister, because she is your father's close relative.