Genesis 27:30

The other one, you see, comes along in the evening, and brings what his father ordered, and finds his brother has been blessed instead of himself and is not blessed with a second blessing. Because those two men were two peoples. One blessing signifies the unity of the church. But they are two peoples.… But the two peoples who belong to Jacob are represented in other ways. You see, our Lord Jesus Christ, who had come to Jews and Gentiles, was repudiated by the Jews, who belonged to the elder son. However, he chose some of them who belonged to the younger son, who had begun to desire and understand the Lord's promises, not taking that land they desired materialistically but spiritually desiring that city where no one is materially born, because in it no one either materially or spiritually dies.

And it came to pass, as soon as Isaac had made an end of, blessing Jacob,....

But a moment's reflection convinced the aged patriarch that the transfer of the blessing was "of the Lord," and now irrevocable. The importunities of Esau, however, overpowered him; and as the prophetic afflatus was upon the patriarch, he added what was probably as pleasing to a man of Esau's character as the other would have been.