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33 And Jacob said, Swear to me this day; and he sware unto him: and he sold his birthright unto Jacob.
In Genesis 27:22, 'voice' relates to truth, and 'hand,' to good.
(References: Arcana Coelestia 3563)
22 Jacob went near to Isaac his father. He felt him, and said, "The voice is Jacob's voice, but the hands are the hands of Esau."