Lev 18:9 | NET2full | STEP | You must not have sexual relations with your sister , whether she is your father’s daughter or your mother’s daughter , whether she is born in the same household or born outside it; you must not have sexual relations with either of them.

Leviticus 18:9

9 You must not have sexual relations with your sister, whether she is your father’s daughter or your mother’s daughter, ^{▼▼tn Heb “the daughter of your father or the daughter of your mother.”} whether she is born in the same household or born outside it; ^{▼▼tn Heb “born of house or born of outside.” CEV interprets as “whether you grew up together or not” (cf. also TEV, NLT).} you must not have sexual relations with either of them. ^{▼▼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.} ^{▼▼tn For a smooth English translation “either of” was added.}