Leviticus 18:10

The nakedness of thy son's daughter, or of thy daughter's daughter, even their nakedness thou shalt not uncover: for theirs is thine own nakedness.

"'You shall not uncover the nakedness of your son's daughter, or of your daughter's daughter, even their nakedness: for theirs is your own nakedness.

The nakedness of thy son's daughter, or of thy daughter's daughter, even their nakedness thou shalt not uncover: for theirs is thine own nakedness.

`The nakedness of thy son's daughter, or of thy daughter's daughter: thou dost not uncover their nakedness; for theirs `is' thy nakedness.

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