NSB(i)
5 He did not look with favor on Cain and his offering. So Cain became very angry, and his face was downcast (he had a bad attitude).
6 Jehovah said to Cain: »Why are you angry? Why is your face downcast?
7 »If you do what is right, will not your attitude improve? But if you do not do what is right, sin is crouching at your door. It desires to have you, but you must master it.«
8 While they were in the field, Cain attacked his brother Abel and killed him.