Genesis 27:39

At length, in reply to the weeping suppliant, he bestows upon him a characteristic blessing. "Away from the fatness." The preposition (מי mı̂y) is the same as in the blessing of Jacob. But there, after a verb of giving, it had a partitive sense; here, after a noun of place, it denotes distance or separation; for example, Proverbs 20:3 The pastoral life has been distasteful to Esau, and so it shall be with his race. The land of Edom was accordingly a comparative wilderness (Malachi 1:3). "On thy sword." By preying upon others. "And thy brother shalt thou serve." Edom was long independent; but at length Saul was victorious over them 1 Samuel 14:47, and David conquered them 2 Samuel 8:14. Then followed a long struggle, until John Hyrcanus, 129 b.c., compelled them to be circumcised and incorporated into Judaism. "Break his yoke." The history of Edom was a perpetual struggle against the supremacy of Israel. Conquered by Saul, subdued by David, repressed by Solomon, restrained after a revolt by Amaziah, they recovered their independence in the time of Ahab. They were incorporated into the Jewish state, and furnished it with the dynasty of princes beginning with Antipater. Esau was now exasperated against his brother, and could only compose his mind by resolving to slay him during the days of mourning after his father's death.

27:39 Esau likewise obtained a blessing: yet it was far short of Jacob's. 1. 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. 2. 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. 3. 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.