I Peter 2 ... 1 Wherefore laying aside all malice, and all guile, and hypocrisies, and envies, and all evil speakings,
envy: a feeling of discontent or resentment aroused by someone else's possessions or qualities
Genesis 4 ... 3 And in process of time it came to pass, that Cain brought of the fruit of the ground an offering unto the Lord. 4 And Abel, he also brought of the firstlings of his flock and of the fat thereof. And the Lord had respect unto Abel and to his offering:5 But unto Cain and to his offering he had not respect. And Cain was very wroth, and his countenance fell.
6 And the Lord said unto Cain, Why art thou wroth? and why is thy countenance fallen? 7 If thou doest well, shalt thou not be accepted? and if thou doest not well, sin lieth at the door.
... 8 And Cain talked with 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.