6 And the LORD said to Cain, Why are you wroth? and why is your countenance fallen?

7 If you do well, shall you not be accepted? and if you do not well, sin lies at the door. And to you shall be his desire, and you shall rule over him.

8 And Cain talked with Abel his brother: and it came to pass, when they were in the field, that Cain rose up against Abel his brother, and slew him.