39 Isaac his father answered him, "Behold, of the fatness of the earth will be your dwelling, and of the dew of the sky from above.
*Minor differences ignored. Grouped by changes, with first version listed as example.
Behold, thy dwelling shall be the fatness of the earth. At length Esau obtains what he had asked. For, perceiving himself to be cast down from the rank and honor of primogeniture, he chooses rather to have prosperity in the world, separated from the holy people, than to submit to the yoke of his younger brother. But it may be thought that Isaac contradicts himself, in offering a new benediction, when he had before declared, that he had given to his son Jacob all that was placed at his disposal. I answer, that what has been before said concerning Ishmael must be noted in this place. For God, though he hearkened to Abraham's prayer for Ishmael, so far as concerned the present life, yet immediately restricts his promise, by adding the exception implied in the declaration, that in Isaac only should the seed be called. I do not, however, doubt, that the holy man, when he perceived that his younger son Jacob was the divinely ordained heir of a happy life, would endeavor to retain his firstborn, Esau, in the bond of fraternal connection, in order that he might not depart from the holy and elect flock of the Church. But now, when he sees him obstinately tending in another direction, he declares what will be his future condition. Meanwhile the spiritual blessing remains in its integrity with Jacob alone, to whom Esau refusing to attach himself, voluntarily becomes an exile from the kingdom of God. The prophecy uttered by Malachi, (Malachi 1:3,) may seem to be contradictory to this statement. For, comparing the two brothers, Esau and Jacob, with each other, he teaches that Esau was hated, inasmuch as a possession was given to him in the deserts; and yet Isaac promises him a fertile land. There is a twofold solution: either that the Prophet, speaking comparatively, may with truth call Idumea a desert in comparison with the land of Canaan, which was far more fruitful; or else that he was referring to his own times. For although the devastations of both lands had been terrible, yet the land of Canaan in a short time flourished again, while the territory of Edom was condemned to perpetual sterility, and given up to dragons. Therefore, although God, with respect to his own people, banished Esau to desert mountains, he yet gave to him a land sufficiently fertile in itself to render the promise by no means nugatory. For that mountainous region both had its own natural fruitfulness, and was so watered by the dew of heaven, that it would yield sustenance to its inhabitants.
And Isaac his father answered and said unto him,.... Being willing to bestow what he could upon him, without lessening or breaking in upon the grant made to Jacob:
behold, thy dwelling shall be the fatness of the earth, and of the dew of heaven from above: this agrees with part of the blessing of Jacob, only the clauses are inverted, and no mention made of corn and wine; the land of Edom not being so fat and fruitful as the land of Canaan. Castalio renders the words very differently, "thy habitation shall be from the fatness of the earth, or without the fatness of the earth, and without the dew of heaven from above" (c); or otherwise he thinks Esau would have the same blessing with Jacob, and so would have no occasion of complaint or grief, or to have hated his brother and sought his life; to which may be added, that the land of Edom, which Esau and his posterity inhabited, was a very desert country, see Malachi 1:3.
(c) See the Bishop of Clogher's Chronology of the Hebrew Bible, p. 142.
Behold, thy dwelling shall be the fatness of the earth--The first part is a promise of temporal prosperity, made in the same terms as Jacob's [Genesis 27:28] --the second part refers to the roving life of hunting freebooters, which he and his descendants should lead. Though Esau was not personally subject to his brother, his posterity were tributary to the Israelites, till the reign of Joram when they revolted and established a kingdom of their own (2-Kings 8:20; 2-Chronicles 21:8-10).
Esau likewise obtained a blessing: yet it was far short of Jacob's. In Jacob's blessing the dew of heaven is put first, as that which he most valued and desired: in Esau's the fatness of the earth is put first, for that was it which he had the principal regard to. Esau hath these, but Jacob hath them from God's hand. God give thee the dew of heaven, Genesis 27:28. It was enough to have the possession, but Jacob desired it by promise. Jacob shall have dominion over his brethren, for the Israelites often ruled over the Edomites. Esau shall have dominion, he shall gain some power, but shall never have dominion over his brother: we never find that the Jews were sold into the hands of the Edomites, or that they oppressed them. But the great difference is, that there is nothing in Esau's blessing that points at Christ, nothing that brings either him or his into the church, and without that the fatness of the earth, and the plunder of the field, will stand him in little stead. Thus Isaac by faith blessed them both, according as their lot should be.
*More commentary available at chapter level.