Genesis 25:28

28.And Isaac loved Esau. That God might more clearly show his own election to be sufficiently firm, to need no assistance elsewhere, and even powerful enough to overcome any obstacle whatever, he permitted Esau to be so preferred to his brother, in the affection and good opinion of his father, that Jacob appeared in the light of a rejected person. Since, therefore, Moses clearly demonstrates, by so many circumstances, that the adoption of Jacob was founded on the sole good pleasure of God, it is an intolerable presumption to suppose it to depend upon the will of man; or to ascribe it, in part, to means, (as they are called,) and to human preparations. (33) But how was it possible for the father, who was not ignorant of the oracle, to be thus predisposed in favor of the firstborn, whom he knew to be divinely rejected?. It would rather have been the part of piety and of modesty to subdue his own private affection, that he might yield obedience to God. The firstborn prefers a natural claim to the chief place in the parent’s affection; but the father was not at liberty to exalt him above his brother, who had been placed in subjection by the oracle of God. That also is still more shameful and more unworthy of the holy patriarch, which Moses adds; namely, that he had been induced to give this preference to Esau, by the taste of his venison. Was he so enslaved to the indulgence of the palate, that, forgetting the oracle, he despised the grace of God in Jacob, while he preposterously set his affection on him whom God had rejected? Let the Jews now go and glory in the flesh; since Isaac, preferring food to the inheritance destined for his son, would pervert (as far as he had the power) the gratuitous covenant of God! For there is no room here for excuse; since with a blind, or, at least, a most inconsiderate love to his firstborn, he undervalued the younger. It is uncertain whether the mother was chargeable with a fault of the opposite kind. For we commonly find the affections of parents so divided, that if the wife sees any one of the sons preferred by her husband, she inclines, by a contrary spirit of emulation, more towards another. Rebekah loved her son Jacob more than Esau. If, in so doing, she was obeying the oracle, she acted rightly; but it is possible that her love was ill regulated. And on this point the corruption of nature too much betrays itself. There is no bond of mutual concord more sacred than that of marriage: children form still further links of connection; and yet they often prove the occasion of dissension. But since we soon after see Rebekah chiefly in earnest respecting the blessing of God, the conjecture is probable, that she had been induced, by divine authority, to prefer the younger to the firstborn. Meanwhile, the foolish affection of the father only the more fully illustrates the grace of the divine adoption.