For a summary of the Serpent Seed Theory you can find many on the Internet. One such summary can be found at: http://mystery-babylon.org/cain.html
Here they summarize the story: "Cain kills Abel; his own brother." But they also quote from the lost scripture, "Untold Garden of Eden," and they say "that the serpent and Eve may have gone a little farther than just eating a piece of fruit. Their offspring, according to many ancient sources, was Cain."
Then they say, "The common word for fathering a child, in the Bible, is begat. Nowhere in the Bible does it say that Adam begat Cain!"
It is clear that Adam "was cloned" from the dust and Eve was "cloned" from his rib. There is no reason why Cain could not have been "cloned" from Eve, but NOT from Adam (by Lucifer.)
Though I am not sure I completely agree with this theory...
Brigham Young stated in the speech that I quoted in my former post, stated: "Now says the grand father I will not distroy the seed of michal and his wife; and cain I will not kill you, nor suffer any one to kill you, but I will put a mark upon you. "
Here the Prophet Young stated that our Grandfather God (the father of Adam) himself stated that Cain is the Seed of Michael (aka Adam, aka Ancient of Days) and NOT of Satan. The Book of Moses chapter 5 discusses the ritual sacrifice of Cain when he killed Abel. And Chapter 5 states that God accepted Abel's sacrifice of a sheep, but not Cain's sacrifice of crops. The angry Cain made a secret pact with Satan, who asked Cain to:
"...swear unto me by thy throat, and if thou tell it thou shalt die; and swear thy bretheren by their heads, and by the living God, that they tell it not; for if they tell it, they shall surely die; and this that thy father may not know it; and this day I will deliver thy brother Abel into thine hands."
After entering this secret pact with Satan, Cain said, "Truly I am Mahan, the master of this great secret, that I may murder to get gain." Then, the passage comments, "Wherefore Cain was called Master Mahan; and he gloried in his wickedness." This arrangement was referred to as a secret combination.
Later, the passage states that Cain's descendant Lamech had "slain a man to wounding, and a young man to his hurt", and Lamech "entered into a covenant with Satan, after the manner of Cain, wherein he became Master Mahan, master of the great secret which was administered unto Cain by Satan." When a man named Irad, one of the sons of Enoch who knew about Lamech's secret pact, revealed that secret to others, the passage states that Lamech killed him to enforce the blood oath of secrecy.
Murder is indeed a horrible act. But it does not seem to be the the type of act that would cause immediate spiritual death to anyone that had sex with the seed of Cain. For instance, Brigham Young taught a much greater extreme. In a sermon given on March 8, 1863, Young stated: "Shall I tell you the law of God in regard to the African race? If the white man who belongs to the chosen seed mixes his blood with the seed of Cain, the penalty, under the law of God, is death on the spot. This will always be so" (Journal of Discourses, 10:110).
Generation after generation of curses would be too much punishment if your ancestor merely was Cain who killed his brother. And even if Cain made a secret covenant with Satan, that would be upon HIS head, and should not carry down to his descendants. Our 2nd Article of Faith states: "We believe that men will be punished for their own sins, and not for Adam's transgression."
Likewise, we would be under the same protection against the "transgressions" of Cain... so there has to be something more to it. IT HAS TO BE THAT THE OLD LOST SCRIPTURES WERE RIGHT... Satan raped Eve and Cain is HIS SEED. This is the only theory that makes any sense.
And it would help us understand WHY WE NEED THE ATONEMENT of Christ so that we can be saved (see 3rd Article of Faith). What do we need to be saved from? The answer is clear... we need to be saved from the curse that we live under. We live under the cloud of being the spawn of Lucifer. Our blood has the DNA of Satan and we need to be washed clean and made whole again... Else we perish and return to the darkness of our father Lucifer.