“By your sword you will live, and you will serve your brother; it will be when you will revolt, you will remove his yoke from your neck” (Genesis 27:40). “By [ve’al] your sword you will live” – Rabbi Levi said: Insert [ul] your sword and you will live.16Insert your sword into its sheath and do not draw it, because if you attack Jacob you will be defeated. “And you will serve your brother” – Rav Huna said: If he merits, you will serve; if not, you will eradicate.
“It will be when you will revolt” – you have fairs and markets and he has markets; you have laws and customs and he has laws and customs. Rabbi Yosei bar Ḥalafta said: If you see your brother throwing the yoke of Torah from upon him, decree upon him persecutions and you will dominate him. That is what is written: “For You are our Father; although Abraham does not know us and Israel does not recognize us” (Isaiah 63:16).
Where is Isaac? One who says to him:17Isaac said to Esau. ‘Decree upon him persecutions,’ do you18The prophet. mention him along with the [other] patriarchs?