The Cain and Abel story reveals the progression of sin in Genesis.  
Sin, initiated by Adam and Eve's desire to contend for supremacy with 
God, progresses outward as human beings contend for supremacy with one 
another. Cain is angry because God has regard for Abel's offering, but 
not for his own.  Genesis 4 is a living parable of James' words in James
 4:1, " What causes quarrels and what causes fights among you? Is it not
 this, that your passions are at war within you? 2 You desire and do not
 have, so you murder."  
 
Abel
 had God's regard, a commendation from the Lord, and Cain wanted it.  Of
 course to want such a regard was not a bad thing!  (There is even a 
place in the Bible for a godly jealousy that longs for righteousness and
 is angered when sin, Satan, or the world, consumes what should bring 
glory to God.)  But rather than produce humble self-reflection and an 
active mortification of his own sinful jealousy and hardheartedness,  
Cain turned this passion toward his brother in a murderous rage.  The 
logic of his own heart seemed to be: "unless I can have what you have, I
 will destroy you."
Countless quarrels and fights in our own lives are reflected in the story of Cain and Abel.
"You took my parking space, so I mutter or scream at you."
"You took away the relaxing evening I wanted, so I withdraw from you in sullen anger."
"You received the recognition that I want, so I internally meditate on all of your failures."
All
 of our quarrels, internal and external, reveal that we haven't gotten 
something we desperately wanted--wanted enough to fight for it.   In 
some of these conflicts,  the other person has simply thwarted our 
desires.  In other fights, the other person has received (or taken!) the
 very thing we want so badly, and jealousy arises out of the heart.  
"You have what I wanted!"--is the heart cry of the jealous person. 
Perhaps this is why jealousy conflicts are so full of rage, so 
emotionally charged, and why jealous people are willing to go to such 
lengths to punish the person or take back what they demand.
The 
objects of jealousy are legion--they could be attention, prominence, 
position, possessions, relationships, recognition, legacy, intimacy, and
 a host of other desires-become-idols.  In all fights of jealousy, the 
fundamental craving is the same:  "You have what I should have and I 
demand to have it back, or, if that is impossible, I demand that you not
 have it anymore."   The jealous person will fight to have their idol 
restored, and if denied, will simply begin to fight against the person 
who has it, looking to destroy anything, including the person, the 
object of the desire, and anyone else who gets in their way.  This is 
what happened to Cain.  This is also the story of the two women who came
 to Solomon for judgment--the jealous woman would rather the surviving 
baby be destroyed than that the other woman have what she could not 
have.  This is the story of the high priests and Jesus--they were 
willing to destroy him, willing for the people be deprived of his 
ministry, rather than see him have the popularity they wanted.  Jealousy
 is seen even in the original desire of Satan. Wanting to attain to 
God's throne,  he would rather destroy God's world and everything in it 
than that God receive the glory that he wanted.  Lets us be sobered by 
this: Fighting because of  sinful jealousy is acting just like Cain, 
just like that murderous mother before Solomon, just like the high 
priests, just like Satan.
Jealousy is so powerful the Proverbs writer even uses the danger of jealousy as an incentive against sin toward others: 
For
 jealousy makes a man furious, and he will not spare when he takes 
revenge. He will accept no compensation;he will refuse though you 
multiply gifts. Proverbs 6:34-35 In other words,  don't be foolish enough to make a person jealous against you because of sinfully wronging them!
Proverbs also says this about the power of jealousy: Wrath is cruel, anger is overwhelming, but who can stand before jealousy? Proverbs 27:4
Sinful
 jealousy burns like a fire. We must quench even the smallest flames of 
it in our heart lest it build into the conflagration that consumes us.  
How do we do this?
Let us take our jealousy to the cross of Jesus Christ.  On the cross, Jesus gave up what he 
rightfully deserved
 to bear the punishment that we should have received.  Jesus suffered 
from the jealousy of others in order to pay for the jealousy in our 
hearts.  Even as he died for the raging, wrath-deserving jealousy of his
 people, he prayed, "Father, forgive them, for they know not what they 
do."  The blood of Christ speaks a better word than the blood of Abel: 
Abel's blood cried condemnation for jealous Cain, but Jesus' blood 
speaks forgiveness for the jealousy in our hearts.  Our Lord is indeed 
faithful to forgive us and cleans us of all unrighteousness.  Let us go 
to Him, and consider his death on our behalf. Views of the cross, with a
 heart watered by the Spirit, quench the flames of jealousy.
Let 
us see and tremble at the spirit of Cain within our hearts, and let us 
return in faith to the blood of Christ that has cleansed us from such 
sin, and pray continually for His Spirit to produce within us the 
humble, God-trusting, patient, enduring, servanthood of the Lord Jesus 
Christ.