"For this is the message that ye heard from the beginning, that we should love one another. Not as Cain, who was of that wicked one, and slew his brother. And wherefore slew he him? Because his own works were evil, and his brother’s righteous. Marvel not, my brethren, if the world hate you. We know that we have passed from death unto life, because we love the brethren. He that loveth not his brother abideth in death. Whosoever hateth his brother is a murderer: and ye know that no murderer hath eternal life abiding in him." ( I John 3:11-15) Abel slew a lamb: Abel was humble, and when he came before God he offered up the bleeding body of a lamb as a necessary sacrifice for sin . The lamb was Abel's acknowledgement of his sinful condition and need for redemption.
Cain slew his brother:
Unlike Abel, the massively proud Cain saw no need for redemption. In his mind he was not a sinner and had no need of forgiveness even though he hated and envied Abel for being good. Abel's heart for truth and righteousness showed Cain to be a phony self-righteous liar who, though refusing to kill a lamb, did not hesitate at killing his brother who he offered up on the altar of his narcissism, rage, envy, and rebellion.
The supernatural triune God is a God of goodness with a preferential love for man, the special object of His redemption and glorification, and it was this divine, ineffable love that drove Lucifer into such envious rage that he sought to seize God's throne and in league with his legions of demons concentrate on seducing man to rebel against God.
With Cain he succeeded. Cain imitated Lucifer in his pride, his rebellion against God and in his envy-fueled murderous rage:
"By the envy of the devil, death came into the world." (Wisdom 2:24)
Envy is one of the most corrosive and cold-blooded vices of all. It is a source of anger and hate, of bitterness and discord. It is a sower of suspicion, dislike, contempt, and distrust between neighbors, friends, brothers, sisters and spouses. In its' inordinate desire for fame, high repute, popularity, and acceptance here on earth it degrades its' brother through contention, gossip, back-biting, malicious whispering, murmuring and the spreading of destructive rumors against the object of its envy. Its' fangs and talons gnash, tear and rip open the back of its' brother while its' poison corrodes his good name, character and spiritual virtues.
Envy is the character assassin par excellence and when it cannot goad its' brother into degrading himself it will proceed first to physical violence and then finally to murder to destroy its' spiritually invincible brother, thus Cain slew Abel.
In "The Roots of Violence," Vincent P. Miceli, S.J., writes that the curse of envy,
"...more than any other sin, has the capacity to create a hell on earth. For it provokes men to avarice and spiritual gluttony in a fierce, often violent, attempt to outstrip rivals by fair or foul means in the accumulation of riches and honors in this life." (p. 79)
In his epistle, St. James reveals that the vice of envy is one source of quarrels, covetousness, murderous rage and wars:
"Whence do wars and quarrels arise among you? Is it not from this, from your passions which wage war in your members? You covet and do not have; you kill and envy and cannot obtain." (James 4:3)
Envy is the great leveler. It attempts to level everyone down to the same common denominator. If anyone is not equal in virtue, intelligence, beauty, courage, success, talent, wealth, position, prestige, and happiness, the envious conclude that a grave injustice has been imposed on themselves---the less fortunate, the victims of a socially unfair, unjust society. The remedy is to tear everything down. To unmake unchanging truths, moral absolutes, standards, sexual ethics, rules, traditions, "He made them man and woman," and cultural mores. The brethren who are envied, and even their children, must be led into self-degradation, sexual perversion and spiritual mutilation, and if that fails, they must be murdered.
In his book, "The Seven Deadly Sins Today," Henry Fairlie unmasks America's cult of envy:
"The legend of our times....might be, 'The Revenge of Failure.' That is what envy has done for us. If we cannot paint well, we will destroy the canons of painting and pass ourselves off as painters. If we will not take the trouble to write poetry, we will destroy the rules of prosody and pass ourselves off as poets. If we are not inclined to the rigors of an academic discipline, we will destroy the standards of that discipline and pass ourselves off as graduates. If we cannot or will not read...we will dispense with reading. If we cannot make music, we will simply make a noise and persuade others that it is music. If we can do nothing at all, Why! We will strum a guitar all day and call it self-expression. As long as no talent is required, no apprenticeship to a skill, everyone can do it, and we are all magically made equal, and failure has had its revenge." (Miceli, pp. 81-82)
During the 20th century, Communist Marxism was murderous envy masquerading as peace and social justice. Like Cain, Communist Marxists imitated Lucifer in his pride, his rebellion against God and in his envy-fueled murderous rage. Whereas Cain slew Abel on the altar of his pride, hate and envy, Communists murdered in excess of 60,000,000 of their brethren, sexually perverted their children, blasphemed God and systematically desecrated and destroyed His houses of worship.
Today Marxism's 'green' spiritual Communist counterpart masquerades as the savior of our planet and messianic bringer of peace, equality, and sustainable justice. Additionally, many of our recent so-called "senseless" murders, such as the Sandy Hook massacre followed quickly by the ambushing and murdering of firefighters can also be explained by envy.
Envy can be likened to a spiritual law, a governing principle. It follows a predictable downward spiraling path of destruction and represents a suicidal streak in man---a spiritually sick desire to murder his brother and to pull everyone else down into an egalitarian herd society, a utopian anthill swarming with evolved faceless apes where everyone can do everything, have everything, be everything, experience everything. And if he cannot be God, then like Karl Marx, he will seek the destruction of the world and everything in it.
Scripture combines pride (narcissism) with lying, hatred, covetousness and envy into a single concept: idolatry of self and rebellion against God in imitation of Lucifer. The devil's self-idolatry and envy are his entire being and the only things he can offer man. Thus by being proud and envious, Cain and all who are like him, share in what it is to be the devil.