Genesis 27:30

Jacob was yet … out These words dramatically represent to us the rapid succession of the two scenes, and remind us that, had Esau arrived a few minutes earlier, the dénouementwould have been entirely different. Rebekah's trick has been wholly successful. Jacob has won the blessing of the firstborn; he has won it with scarcely a minute to spare. A moment earlier; and he would have been detected "flagrante delicto." The detection was bound to be made. But the risk was run for the sake of the irreversible and sacred "blessing of primogeniture," conferred by a dying father.