Grace, Grace to It! Zechariah 4:7

Since the fall of Adam and Eve in the garden of Eden, mankind has been attempting to live with the corrupt, fallen, sinful human nature inherited from its first parents. 
Psychoanalysts have been studying human behavior for thousands of years, attempting to understand the fundamental reason for man's infatuation and bent towards evil. They all agree that a newborn child, without proper instruction, will most often grow up bad. From the human standpoint, man kind is bad by nature. Yet, psychiatry has also observed that there is a bit of good in mankind, too. Good and bad, co-inhabiting, together. Good and evil, much like the tree that Adam and Eve ate from. 
Ephesians 2:3 ESV, "...among whom we all once lived in the passions of our flesh, carrying out the desires of the body and the mind, and were by nature children of wrath, like the rest of mankind." 
The human race is full of opinions about the origin of the evil that exists in the nature of man. Some say it is learned behavior; that, man by nature is intrinsically good. However, as we have read, according to the scriptures man is: "...by nature the children of wrath." 
There is another scripture that we must consider: John 1:9, "That was the true Light, which lighteth every man that cometh into the world." Notice, John 8:12 ESV, identifies who that light is: "...I am the light of the world..." Of course, the 'I', is Jesus the Son of God. 
So it was in the garden of Eden, at the moment the once perfect pair ate of the tree of 'knowledge of good and evil', they not only took on the satanic evil nature of the devil himself, but in the same moment, received from God "that true Light which lighteth every man..." From that moment forward, good and evil existed in every man--as it did on that one tree in the garden. 
In Genesis 3:22 God said, "Behold the man has become as one of us, to know good and evil..." KJV. However, knowing good and evil, and being both good and evil are two different things. God knows both good and evil, yet is not evil. Luke 18:19 ESV, "...No one is good except God alone." 
Genesis 2:17 ESV, "...in the day that you eat of it you shall surely die." It was at the point that the pair first bit into the forbidden fruit that the preordained Grace and mercies of God, provided in the provisions of the Gospel of Jesus Christ, were exercised in behalf of all mankind. In other words, the LORD Jesus Christ stepped forward to take the death that God had promised to Adam. In so doing the LORD God reconciled to himself forever, not only Adam and Eve but their posterity to the end of time as we know it on this earth. Therefore, all mankind have been born into this world pre-reconciled to God, through his Son. 
2 Corinthians 5:18-21 KJV, "And all things are of God, who hath reconciled us to himself by Jesus Christ, and hath given to us the ministry of reconciliation; (19) To wit, that God was in Christ, reconciling the world unto himself, not imputing their (mankind's) trespasses unto them... (20) ...we pray you in Christ's stead, be ye reconciled to God. (21) For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him." 
Although, by means of the gospel of Jesus Christ, God has reconciled man to himself, not all men have reconciled themselves to God. According to the scriptures, from the time of the fall of the first Adam the human family comes into this world with a fallen, sinful nature. Consequently, all men are by that nature, children of wrath. However, because "...he (God) gave his only begotten Son..." John 3:16, the offence is no longer held against the human family. "...whosoever believeth in him, should not perish, but have everlasting life." 
All sin, past, present and future, was laid upon the Son of God "...the Lamb slain from the foundation of the world." (Rev 13:8. 
1 Peter 2:24 KJV, "He himself bore our sins, in his body on the tree..." in your stead and in mine; the just for the unjust, the innocent for the guilty. 
1 Peter 3:18, "For Christ also hath once suffered for sins, the just for the unjust, that he might bring us to God, being put to death in the flesh but made alive in the spirit." That makes it your turn, and my turn to reciprocate by reconciling ourselves to God, by receiving the gift of his Son. 
Many believe that Christ only died for our past sins. Think about this: Since the beginning of time, every sin ever committed by the human race, including all sin that ever will be committed, can only originate from one source: the fallen sinful nature inherited from the first Adam. When Christ died on the cross, he effectively, became humanity's fallen nature; and in dying, killed it, did away with it, took it to hell and left it there; placing it in the depths of hades (hell) the grave, which is as far from us as the east is from the west where he remembers it no more. "As far as the east is from the west, so far hath he removed our transgressions from us." Psalms 103:12 KJV. 
"I, even I, am he that blotteth out thy transgressions for mine own sake, and will not remember thy sins." Isaiah 43:25 
In Gods eyes those sins do not exist, because the fallen nature no longer exists; having been crucified on the cross in the person of Jesus Christ: this is how God sees the world, and he sees us that way because of what his Son did for us on the cross.