Kabbalah Imamat 10:8: Sha'arei Orah

After having informed you of this, we must also tell you the secret of the delicacies that Yitzchak requested of Esav. Yaakov then came and made those delicacies for his father Yitzchak, and inherited the blessing of Esav. I already have informed you that our forefather Yitzchak, peace be upon him, was a perfectly pure sacrificial offering, and that the Indwelling Presence of HaShem-יהו״ה, blessed is He, (Shechinah), never departed from him for even a moment. This being so, how could error come about through his hand? How could he love Esav? How could he want to bless the wicked one and set aside the righteous one? Moreover, after eating and drinking, how could the blessing be sustained? Is it not so that prayer must precede eating? Does the verse not state,³⁵⁰Leviticus 10:8 “Do not drink intoxicating wine, you and your sons with you”? This being so, how is it that Yitzchak wanted to eat and drink, and only then bless the wicked one?