Adam knew his wife Eve intimately, and she conceived and gave birth to Cain. She said, "I have had a male child with the Lord's help."
Then she also gave birth to his brother Abel. Now Abel became a shepherd of a flock, but Cain cultivated the land.
In the course of time Cain presented some of the land's produce as an offering to the Lord.
And Abel also presented [an offering]-some of the firstborn of his flock and their fat portions. The Lord had regard for Abel and his offering,
but He did not have regard for Cain and his offering. Cain was furious, and he was downcast.
Then the Lord said to Cain, "Why are you furious? And why are you downcast?
If you do right, won't you be accepted? But if you do not do right, sin is crouching at the door. Its desire is for you, but you must master it."
Cain said to his brother Abel, "Let's go out to the field." And while they were in the field, Cain attacked his brother Abel and killed him.
Then the Lord said to Cain, "Where is your brother Abel?" "I don't know," he replied. "Am I my brother's guardian?"
Then He said, "What have you done? Your brother's blood cries out to Me from the ground!
So now you are cursed [with alienation] from the ground that opened its mouth to receive your brother's blood you have shed.
If you work the land, it will never again give you its yield. You will be a restless wanderer on the earth."
But Cain answered the Lord, "My punishment is too great to bear!
Since You are banishing me today from the soil, and I must hide myself from Your presence and become a restless wanderer on the earth, whoever finds me will kill me."
Then the Lord replied to him, "In that case, whoever kills Cain will suffer vengeance seven times over." And He placed a mark on Cain so that whoever found him would not kill him.
Then Cain went out from the Lord's presence and lived in the land of Nod, east of Eden.