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Cain and Abel
3So it came about in the course of time that Cain brought an offering to the Lord from the fruit of the ground. 4Abel, on his part also brought an offering, from the firstborn of his flock and from their fat portions. And the Lord had regard for Abel and his offering; 5but for Cain and his offering He had no regard. So Cain became very angry and his face was gloomy. 6Then the Lord said to Cain, “Why are you angry? And why is your face gloomy? 7If you do well, will your face not be cheerful? And if you do not do well, sin is lurking at the door; and its desire is for you, but you must master it.”
Genesis 4:3-7 (NASB)