Leviticus 18:14

King James 2000

You shall not uncover the nakedness of your father’s brother, you shall not approach to his wife: she is your aunt.

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You shall not uncover the nakedness of your mother’s sister: for she is your mother’s near kinswoman.

And if a man shall lie with his uncle's wife, he has uncovered his uncle's nakedness: they shall bear their sin; they shall die childless.