ערות בת אביך. יש אומרים שהיא האחות מאב ואם ואנחנו ידענו כי השוכב עמה עובר על שני לאוין ויש אומרים כי זה הפסוק לחזוק והצדוקים אמרו שאיננה בת אם ויפרשו מולדת אביך שגדלה אביך והטעם שלקח האב אשה והיתה לה בת קטנה וכן יפרשו על תמר וראייתם כי לא ימנעני ממך רק לא היתה מולדת דוד ואחר שהמעתיקים אמרו כי בת אשת אב מותרת אין צורך להשיב על הבודאים מלבם ויתכן להיות בת אשת אביך בת אנוסה: THE NAKEDNESS OF THY FATHER’S WIFE’S DAUGHTER. There are those who say that this refers to a sister from a father and mother.36While verse 9 speaks of a sister from one’s father or one’s mother. Hence our verse is not redundant. We know37From this verse; i.e., we learn from this verse. that the one who sleeps with a sister from a father and mother violates two negative laws.38He transgresses the law prohibiting intercourse with the daughter of one’s father (v. 9) and the law forbidding intercourse with the daughter of the wife of one’s father. There are those who say that our verse was written for emphasis.39It repeats what is written in verse 9 to emphasize that one is not to sleep with one’s sister. The Sadducees40The Karaites. say that thy father’s wife’s daughter does not refer to the daughter of one’s mother. They explain that begotten of thy father means whom your father raised. Our verse deals with an instance in which the father took a woman who had a small daughter. They say the same thing regarding Tamar.41Tamar was the daughter of David. She was raped by her brother Amnon. See II Sam. 13:1-22. According to the Karaites, Tamar was not actually David’s daughter. She was his stepdaughter. When David married her mother she was already grown. According to the Karaites, Scripture only prohibits a stepsister that grew up in one’s home. Hence it was permitted for Amnon to take her in marriage, Their proof is, for he will not withhold me from thee (II Sam. 13:13).42If she were his real sister, she would not have said this to Amnon. She thus was not begotten by David. Now since the transmitters of tradition said that the daughter of your father’s wife is permitted, we have no need to answer those who invent things in their hearts. It is possible that “the daughter of thy father’s wife” refers to a daughter43Of one’s father. resulting from a rape.44While verse 9 speak of a sister born in wedlock. Hence our verse is not redundant.