“Isaac summoned Jacob and he blessed him. He commanded him and said to him: Do not take a wife from the daughters of Canaan” (Genesis 28:1). “Isaac summoned Jacob and he blessed him” – Rabbi Abahu said: Because the blessings were uncertain in his hand.23The blessings which Jacob received when Isaac thought he was Esau were considered uncertain by Jacob. Where were they reinforced in his hand?
It is here, “Isaac summoned Jacob.”24Isaac blessed him at his own initiative. Rabbi Elazar said: Ratification of a document is only by its signatories, so that you will not say that had Jacob not deceived Isaac, he would not have received his blessings. The verse states: “Isaac summoned Jacob and he blessed him.” Rabbi Berekhya said: This is analogous to the son of kings who was digging to take a pound of gold.
He [the king] said to him: ‘Why clandestinely? Come and take it openly.’ “Isaac summoned Jacob and he blessed him.” “He commanded him” – he cautioned him against the daughters of Aner, Eshkol, and Mamre.25He cautioned him not to marry them.
They were allies of Abraham. See Genesis 14:24. “Jacob heeded his father and his mother, and he went to Padan Aram” (Genesis 28:7). “Jacob heeded his father and his mother.”
That is what is written: “Every way of a man is fitting in his own eyes” (Proverbs 21:2). Every way of a man is fitting in his own eyes – this is Samson: “Samson said to his father: Take her for me, as she is fitting in my eyes” (Judges 14:3). “And one who heeds counsel is wise” (Proverbs 12:15) – this is Jacob: “Jacob heeded his father and his mother, and he went.”