'Sister' in the Bible

"You are not to have sexual relations with your sister, whether she's your father's daughter or your mother's daughter, whether she's born in your home or outside your home. You are not to have sexual relations with her.

"You are not to have sexual relations with the daughter of your father's wife. Born of your father, she's your sister, so you are not to have sexual relations with her.

"You are not to have sexual relations with your father's sister. She's your father's near blood relative.

"You are not to have sexual relations with your mother's sister. She's your mother's near blood relative.

"You are not to marry a woman and then have sexual relations with her sister as a rival when your wife is still alive.

"If a man takes his sister, his father's daughter, or his mother's daughter, so that he exposes her nakedness and she exposes his nakedness, it's a shameful thing. They are to be eliminated from contact with their people in front of their people's children. He has exposed his sister's nakedness. He'll continue to bear responsibility for his iniquity.

"You are not to have sexual relations with your mother's sister or your father's sister, because that is laying bare the nakedness of his close relative. They'll continue to bear responsibility for their iniquity.

virgin sister (who is a near relative of him and did not have a husband he may defile himself for her).