Genesis 4
4 Ref And Abel, he also brought of the firstlings of his flock and of the fat thereof. And Jehovah had respect unto Abel and to his offering:
5 Ref but unto Cain and to his offering he had not respect. And Cain was very wroth, and his countenance fell.
6 Ref And Jehovah said unto Cain, Why art thou wroth? and why is thy countenance fallen?
7 Ref If thou doest well, shall it not be lifted up? and if thou doest not well, sin coucheth at the door: and unto thee shall be its desire, but do thou rule over it.
8 Ref And Cain told 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.