Tanach · Rishonim on Tanach · Ibn Ezra · Torah

Ibn Ezra on Leviticus 20:19/אבן עזרא על ויקרא כ׳:י״ט

אוערות אחות אמך. טעמו כבר הזהרתי לא תגלה והנה המגלה את הערוה הערה שארו:
1AND…THE NAKEDNESS OF THY MOTHER’S SISTER. Its meaning is, I have previously60 warned you not to uncover the nakedness of thy mother’s sister.61 However, our verse reads, And…the nakedness of thy mother’s sister… Why the anomaly? Hence I.E.’s comment. Now the one who uncovers the nakedness62 has made naked his near kin.63 is another way of saying he has committed a heinous act. See I.E. on verse 9.
בעונם ישאו. אם הדבר ברצונם לא הזכיר עונש אחות האב גם לא הזכיר כלל עונש שתי אחיות והמשכיל יבין גם דברי הקבלה אמת:
2THEY SHALL BEAR THEIR INIQUITY. If they willingly acted thus. Scripture does not mention the punishment for having intercourse with the sister of one’s father. It also does not even hint at the punishment for taking two sisters.64. However, there is no mention of the punishment for marrying two sisters. The intelligent will understand why.65 The words of tradition are also true.66 (excision). See Sifra on the Torah portion Tzav 13:2.