'Naked' in the Bible

If a man lies [intimately] with a woman during her menstrual cycle and uncovers her nakedness, he has exposed her flow, and she has uncovered the flow of her blood; both of them shall be cut off from their people [excluding them from the atonement made for them].

You shall not uncover the nakedness of (have intimate relations with) your mother’s sister or your father’s sister, for such a one has uncovered his blood relative; they will bear their guilt.