Genesis 27:4

and make me savory meat, such as I love, and bring it to me, that I may eat; that my soul may bless thee before I die. It was not the sudden whim of an old man which was here revealed, but a carefully prepared plan, according to which Esau was to obtain some game by chase and then to prepare the meat in a way of which he knew that it pleased his father. In spite of the divine utterance before the birth of the children, which was undoubtedly known to him, and the careless and almost contemptuous disposal of his birthright by Esau, in spite, also, of the latter's objectionable marriage to the Canaanitish woman, Isaac persisted in his preference for Esau, even in the very important matter of transmitting the Messianic promise. Even in believers the weakness of the flesh will often grow into a sulky obstinacy in ignoring God's manifest guidance.