Leviticus 18:10

18:10 You must not expose the nakedness of your son’s daughter or your daughter’s daughter by having sexual intercourse with them, because they are your own nakedness. ¹ 

Leviticus 18:9

18:9 You must not have sexual intercourse with your sister, whether she is your father’s daughter or your mother’s daughter, ²  whether she is born in the same household or born outside it; ³  you must not have sexual intercourse with either of them. ⁴ 

¹ sn That is, to have sexual intercourse with one’s granddaughter would be like openly exposing one’s own shameful nakedness (see the note on v. 7 above).

² tn Heb “the daughter of your father or the daughter of your mother.”

³ tn Heb “born of house or born of outside.” CEV interprets as “whether you grew up together or not” (cf. also TEV, NLT).

⁴ tc Several medieval Hebrew mss, Smr, LXX, and Syriac have “her nakedness” rather than “their nakedness,” thus agreeing with singular “sister” at the beginning of the verse.