MSB(i)
5 but He had no regard for Cain and his offering. So Cain became very angry, and his countenance fell.
6 “Why are you angry,” said the LORD to Cain, “and why has your countenance fallen?
7 If you do what is right, will you not be accepted? But if you refuse to do what is right, sin is crouching at your door; it desires you, but you must master it.”