Quote in context:
In Genesis, notwithstanding the Lord telling her in an oracle that the older of the twins in her womb would serve the younger, Rebecca is not about to sit around passively and wait for the Lord to fulfill the oracle. She plots and implements the deception of her old blind husband and the shafting of her first born: she does all the work (25.23, 27.6 13). Oracles get fulfilled because they are read as warrants to take action to bring about what they prophesy.