This clear recognition of God's hand in the matter, and quick submission to Him, reveals a habit of reflection, and a spiritual thoughtfulness, which are the good qualities in Isaac's otherwise unsatisfactory character. Before he finished his answer to Esau, he felt he was a poor feeble creature in the hand of a true and just God, who had used even his infirmity and sin to forward righteous and gracious ends. It was his sudden recognition of the frightful way in which he had been tampering with God's will, and of the grace with which God had prevented him from accomplishing a wrong destination of the inheritance, that made Isaac tremble very exceedingly. In this humble acceptance of the disappointment of his life's love and hope, Isaac shows us the manner in which we ought to bear the consequences of our wrong-doing. The punishment of our sin often comes through the persons with whom we have to do, unintentionally on their part, and yet we are tempted to hate them because they pain and punish us, father, mother, wife, child, or whoever else. Isaac and Esau were alike disappointed. Esau only saw the supplanter, and vowed to be revenged. Isaac saw God in the matter, and trembled. So when Shimei cursed David, and his loyal retainers would have cut off his head for so doing, David said, "Let him alone, and let him curse: it may be that the Lord hath bidden him." We can bear the pain inflicted on us by men when we see that they are merely the instruments of a divine chastisement. The persons who thwart us and make our life bitter, the persons who stand between us and our dearest hopes, the persons whom we are most disposed to speak angrily and bitterly to, are often thorns planted in our path by God to keep us on the right way.