Let me show you something that is overlooked by most and known to very few. Note it carefully.
The spiritual promise of the "one seed," Christ, and of salvation through him, the Bible calls "the scepter." This promise, as nearly everybody knows, was handed down through the Jews. Jesus Christ was of the tribe of Judah, and the House of David. "Salvation," Jesus said, "is of the Jews" (John 4:22). "To the Jew first," explained Paul, "and also to the Greek" (Romans 1:16). This fact is confirmed in Genesis 49:10. "The scepter shall not depart from Judah."

Now, here is the astonishing vital fact so few ever seem to have noticed; the birthright was Joseph's. Yes, this was Joseph, who was sold by his brothers down into Egypt, where he became food administrator and Prime Minister Joseph who was called "a prosperous man," even as his descendants were destined to become. "For Judah prevailed above his brethren, and of him came the chief ruler" (scepter promise); "But, the birthright was Joseph's" I Chronicles 5:2 says:

"The sons of Reuben, the firstborn of Israel (he was the firstborn, but when he defiled his father's marriage bed, his rights as firstborn were given to the sons of Joseph son of Israel; so he could not be listed in the genealogical record in accordance with his birthright, and though Judah was the strongest of his brothers and a ruler came from him, the rights of the firstborn belonged to Joseph."

The birthright, which Esau sold to Jacob, the promise of national greatness and material wealth, never was handed to the Jews who are of the tribe of Judah. So naturally we should not expect to find this promise fulfilled in the Jews today. The birthright comes by right of birth to the firstborn son. The term "grace" means undeserved, unmerited favor, something that is not one's right, not inherited by birth, but bestowed as free gift. A "birthright" is inherited, by birth, as one's right. Consequently, the term "birthright" includes only the inheritance of material blessings, passed on from father to son, those blessings one cannot take with him, when he dies.

And what is a "scepter"? It is the badge of royal power, a kingly office. The scepter was God's promise of a continuous dynasty of kings, culminating in Jesus Christ who shall be King of kings; and therefore the scepter included the promise of eternal salvation through the Messiah, Jesus Christ. So notice carefully, please! The scepter, which is the spiritual promise of grace, through which all nations may be blessed, went to Judah, while the birthright went to Joseph. And the birthright includes possession of land, possessing the material "gate" of material enemies, inheriting the Gentiles for a possession, spreading and colonizing around the world! The two phases of the promises to Abraham now are separated into two different tribes of Israel!

What most Christians fail to realize today is that not all Israelites are Jews. Only those who descended from the Tribe of Judah are Jews. Abraham was not a Jew, Jacob was not a Jew and the 10 Tribes called The House of Israel were not Jews. The Bible speaks very plainly of The House of Israel and The House of Judah.