4:5But unto Cain and to his offering he had not respect. And Cain was very wroth, and his countenance fell.

4:6And the LORD said unto Cain, Why art thou wroth? and why is thy countenance fallen?

4:8And 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.