Bereshis 4:6-8 Orthodox Jewish Bible (OJB)
6 And Hashem said unto Kayin, Why art thou angry? And why is thy countenance fallen?
7 If thou doest right, shalt thou not be accepted? And if thou doest not right, chattat croucheth at the petach. And unto thee shall be its teshukah (desire), and thou must rule over it.
8 And Kayin talked with Hevel his brother; and it came to pass, when they were in the sadeh, that Kayin rose up against Hevel his brother, and killed him.