Now (Jacob) was skilled in the Torah, and his heart dreaded the curse of his father. His mother said to him: My son! If it be a blessing, may it be upon thee and upon thy seed; if it be a curse, let it be upon me and upon my soul, as it is said, "And his mother said to him, Upon me be thy curse, my son" (Gen. 27:13). He went and brought two kids of the goats.
Were two kids of the goats the food for Isaac? But he brought one as a Paschal offering, and with the other he prepared the savoury meat to eat; and he brought it to his father, and he said to him: "Arise, I pray thee, sit and eat of my venison" (Gen. 27:19). Isaac said: "The voice is the voice of Jacob" (Gen. 27:22). Jacob (declares) the unity of God.
"The voice is the voice of Jacob" (ibid.) in the meditation of the Torah. "And the hands are the hands of Esau" (ibid.), in all shedding of blood and in every evil death. Not only this, but also when they proclaim in heaven, "The voice is the voice of Jacob," the heavens tremble. And when they proclaim on earth, "The voice is the voice of Jacob" (ibid.), every one who hears will make his portion with "The voice which is the voice of Jacob."
And every one || who does not hear and does not act (obediently), his portion is with "The hands, which are the hands of Esau."