How did Cain kill Abel? In a dream Eve had seen the blood of Abel flow into the mouth of Cain, who drank it with avidity, though his brother entreated him not to take all. The manner of Abel's death was the most cruel conceivable. Not knowing what injury was fatal, Cain pelted all parts of his body with stones, until one struck him on the neck and inflicted death.
Cain bore a son, Enoch, and Cain named the city he built after him. Enoch bore Irad, who bore Mehujael, who bore Methushal, who was the father of Lamech. Who is Cain's wife? But this was not the only cause of Cain's hatred toward Abel. Partly love for a woman brought about the crime. To ensure the propagation of the human race, a girl, destined to be his wife, was born together with each of the sons of Adam. Abel's twin sister was of exquisite beauty, and Cain desired her. Therefore he was constantly brooding over ways and means of ridding himself of his brother.
Book of Remembrance 103/564
33 And Kenneh (Cain) did not have to raise his hand against his brother to perform it but it was done because he was jealous of his brother in his desires for Sephi the wife of his brother and thus he corrupted his marriage in so much that he was able to enter into a covenant with Semihazah and he learned in what manner to perform it from him and it was all to be done in secret 34 And Kenneh said Now I am the master of secret devices because I know the way to accomplish it and Kenneh performed the murder with hateful chantings and doleful murmurings and with the wicked desires which he applied to his prayers 35 And Kenneh had been deceived by the evil one into believing the thoughts of his heart and the sounds of his lips that were done in secret could not be known and he was told that when Matteniah (ABEL) was killed he would be thought to have no part in it seeing he was not near at the time.36 And Kenneh expected that it would all go well for him and his acts would not become discovered because of the covenant administered to him by Semihazah and Asael and all of this was done in secret so Kenneh could obtain the wife of Matteniah and in the end he would have her twin sister also.
From The Book of Jubilees, Chapter 4 at Sacred Texts:
And Cain took ’Âwân his sister to be his wife and she bare him Enoch at the close of the fourth jubilee. And in the first year of the first week of the fifth jubilee, houses were built on the earth, and Cain built a city, and called its name after the name of his son Enoch.
Lamech married two women, Adah and Zillah, and was thereby pronounced the first polygamist, a violation of the law that the Nephilim would later prize as a cornerstone of their rebellious culture.
Genesis 4:19-24 (KJV) “And Lamech took unto him two wives: the name of the one was Adah, and the name of the other Zillah. And Adah bare Jabal: he was the father of such as dwell in tents, and of such as have cattle. And his brother’s name was Jubal: he was the father of all such as handle the harp and organ. And Zillah, she also bare Tubal-cain, an instructer of every artificer in brass and iron: and the sister of Tubal-cain was Naamah. And Lamech said unto his wives, Adah and Zillah, Hear my voice; ye wives of Lamech, hearken unto my speech: for I have slain a man to my wounding, and a young man to my hurt. If Cain shall be avenged sevenfold, truly Lamech seventy and sevenfold.”
The two wives of Lamech, Adah and Zillah, bore him each two children, Adah two sons, Jabal and Jubal, and Zillah a son, Tubal-cain, and a daughter, Naamah. Jabal was the first among men to erect temples to idols, and Jubal invented the music sung and played therein. Tubal-cain was rightly named, for he completed the work of his ancestor Cain. Cain committed murder, and Tubal-cain, the first who knew how to sharpen iron and copper, furnished the instruments used in wars and combats. Naamah, "the lovely," earned her name from the sweet sounds which she drew from her cymbals when she called the worshippers to pay homage to idols.
Nelson’s Bible Dictionary defines Cain as meaning “a metal worker,” thereby attributing Tubal to being his first name, and Cain denoting his expertise, just as his forefather must have been some form of metalworker or smith. The third distinguished progeny was the daughter of Zillah, Naamah, meaning “pleasant.”16 Josephus does not credit anything special to Naamah, but again, to be noted in the Bible, one must be worthy of either good or evil.
How Cain died?
The end of Cain overtook him in the seventh generation of men, and it was inflicted upon him by the hand of his great-grandson Lamech. This Lamech was blind, and when he went a-hunting, he was led by his young son, who would apprise his father when game came in sight, and Lamech would then shoot at it with his bow and arrow. Once upon a time he and his son went on the chase, and the lad discerned something horned in the distance. He naturally took it to be a beast of one kind or another, and he told the blind Lamech to let his arrow fly. The aim was good, and the quarry dropped to the ground. When they came close to the victim, the lad exclaimed: "Father, thou hast killed something that resembles a human being in all respects, except it carries a horn on its forehead!" Lamech knew at once what had happened--he had killed his ancestor Cain, who had been marked by God with a horn. In despair he smote his hands together, inadvertently killing his son as he clasped them. Misfortune still followed upon misfortune. The earth opened her mouth and swallowed up the four generations sprung from Cain-- Enoch, Irad, Mehujael, and Methushael. Lamech, sightless as he was, could not go home; he had to remain by the side of Cain's corpse and his son's. Toward evening, his wives, seeking him, found him there. When they heard what he had done, they wanted to separate from him, all the more as they knew that whoever was descended from Cain was doomed to annihilation. But Lamech argued, "If Cain, who committed murder of malice aforethought, was punished only in the seventh generation, then I, who had no intention of killing a human being, may hope that retribution will be averted for seventy and seven generations." With his wives, Lamech repaired to Adam, who heard both parties, and decided the case in favor of Lamech
Who are Cain's daughter? http://genesis6conspiracy.com/the-daughters-of-cain/
With Cain planting these kinds of seeds in just the second generation, it is not difficult to conceive the entire antediluvian world, other than the lineage of Seth, being totally corrupted by the sixth generation, with Seth’s posterity being completely corrupted by Cain’s descendants from the seventh to the tenth generations and after the Nephilim incident.
The Amharic text of Henok 2:1–3 (i.e. 1 En) in the 1962 Ethiopian Orthodox Bible may be translated as follows: "After mankind abounded, it became thus: And in that season, handsome comely children were born to them; and the Offspring of Seth, who were upon the Holy Mount, saw them and loved them. And they told one another, "Come,let us choose for us daughters from Cain's children; let us bear children for us."