One of the stranger beliefs of Mormonism postulates that the more Hebrew blood you have the more receptive to the truth of the Gospel and authority of the LDS Church you will be. Apparently belief is genetic and the Hebrews hold the majority of shares when it comes to believing... that they're the awesomest, most chosenest people of God.
Even awesomer than believing in the truth because you've got a lot of Hebrew is that if you're of the tribe of Ephraim you won't rebel!
"And the rebellious shall be cut off out of the land of Zion, and shall be sent away, and shall not inherit the land. For, verily I say that the rebellious are not of the blood of Ephraim, wherefore they shall be plucked out." (D&C 64:35-36, emphasis added)
So Ephraim just might be the least rebellious of all the believers of Israel. Very cool stuff (even if it's total nonsense).
It really gives you a sense of what the world lost when the blood of Joseph Smith, a pure Ephraimite, a pure non-rebellious believing blood type, was spilled at Carthage. What a fucking waste of the "best blood of the nineteenth century" (D&C 135:6)!
Joseph Smith III, half Ephraimite, half Moggle.
What's worse is that obviously Emma contaminated that blood because otherwise Joseph Smith III would have surely reunited with the saints in Utah. If only we could once again breed the purest of believers...