And the Lord God said, "Now that the man has become like one of us, knowing good and bad, what if he should stretch out his hand and take also from the tree of life and eat, and live forever!" So the Lord God banished him from the garden of Eden, to till the soil from which he was taken. He drove the man out, and stationed east of the garden of Eden the cherubim and the fiery ever-turning sword, to guard the way to the tree of life.
Now the man knew his wife Eve, and she conceived and bore Cain, saying, "I have gained a male child with the help of the Lord."
She then bore his brother Abel. Abel became a keeper of sheep, and Cain became a tiller of the soil. In the course of time, Cain brought an offering to the Lord from the fruit of the soil; and Abel, for his part, brought the choicest of the firstlings of his flock. The Lord paid heed to Abel and his offering, but to Cain and his offering He paid no heed. Cain was much distressed and his face fell.
And the Lord said to Cain,"Why are you distressed, and why is your face fallen? Surely, if you do right, there is uplift. But if you do not do right sin couches at the door; its urge is toward you, yet you can be its master."
Cain said to his brother Abel ... and when they were in the field, Cain set upon his brother Abel and killed him. The Lord said to Cain, "Where is your brother Abel?" And he said, "I do not know. Am I my brother's keeper?" Then He said, "What have you done? Hark, your brother's blood cries out to Me from the ground! Therefore, you shall be more cursed than the ground, which opened its mouth to receive your brother's blood from your hand. If you till the soil, it shall no longer yield its strength to you. You shall become a ceaseless wanderer on earth."
Cain said to the Lord, "My punishment is too great to bear! Since You have banished me this day from the soil, and I must avoid Your presence and become a restless wanderer on earth--anyone who meets me may kill me!" The Lord said to him, "I promise, if anyone kills Cain, sevenfold vengeance shall be taken on him." And the Lord put a mark on Cain, lest anyone who met him should kill him.
Cain left the presence of the Lord and settled in the land of Nod, east of Eden. Cain knew his wife, and she conceived and bore Enoch. And he then founded a city, and named the city after his son Enoch. To Enoch was born Irad, and Irad begot Mehujael, and Mehujael begot Methusael, and Methusael begot Lamech.