פּירוש אויף בראשית 27:45

למה אשכל means WHY SHOULD I BE BEREAVED משניכם OF BOTH OF YOU? — The one who buries his children is termed שכול bereaved: so we find in the case of Jacob (43:14), “If I am to be bereaved (שכלתי) let me be bereaved”.

למה אשכל גם שניכם יום אחד, “why should your father and I be bereft of both of you on a single day? Rivkah referred to her becoming widowed on the day Yitzchok would die, and immediately thereafter would also be bereft of Yaakov when Esau would carry out his threat. (verse 41) The principal commentary on this line is that of Rashi, who understands Rivkah as saying to Yaakov that even if he were to kill Esau first, his sons would avenge him by killing him. The word: גם, “also,” in this verse refers to herself, who meant that if she were to lose both her sons she would consider herself as dead.

גם שניכם, if he will kill you he in turn will be executed by the blood avengers.

גם שניכם OF YOU BOTH — If he attacks you and you kill him his children will rise and kill you. The Holy Spirit poured itself forth upon her and she prophesied (had a presage) that they would both die on one day just as it is stated in the Chapter המקנה לאשתו (Sotah 13a).