Brigham Young has this to say. "[Y]ou have heard Joseph say that the people did not know him; he had his eyes on the relation to blood-relations. Some have supposed that he meant spirit, but it was the blood-relation. This is it that he referred to. His descent from Joseph that was sold in to Egypt was direct, and the blood was pure in him. That is why the Lord chose him and we are pure when this blood, strain from Ephraim comes down pure. The decrees of the Almighty will be exalted, that blood which was in him was pure and he had the sole right and lawful power, as he was the legal heir to the blood that has been on the earth and has come down through a pure lineage. The union of various ancestors kept that blood pure. There is a great deal the people do not understand, and many of the Latter-day Saints have to learn all about it."
Brigham Young has this to say.
"[Y]ou have heard Joseph say that the people did not know him; he had his eyes on the relation to blood-relations. Some have supposed that he meant spirit, but it was the blood-relation. This is it that he referred to. His descent from Joseph that was sold in to Egypt was direct, and the blood was pure in him. That is why the Lord chose him and we are pure when this blood, strain from Ephraim comes down pure. The decrees of the Almighty will be exalted, that blood which was in him was pure and he had the sole right and lawful power, as he was the legal heir to the blood that has been on the earth and has come down through a pure lineage. The union of various ancestors kept that blood pure. There is a great deal the people do not understand, and many of the Latter-day Saints have to learn all about it."
These two are delusional trying to one up each other's myths.