It is not accidental. It is neither happenstance nor the mere misfortune of being in the wrong place at the wrong time. It is a plague with a concerted, intentional and focused goal to destroy your soul. So, “it lies at the door. And its desire is for you, but you should rule over it” (Genesis 4:7)
At the dawn of existence, the first couple succumbed to Satan’s devious deception; sin has since been the bane of God’s creation. It is that perpetual struggle that seems never to end and appears impossible to conquer. Yet, in the case of Cain’s sin, God said, “rule over it.”
From the beginning, it is the goal of sin to destroy that relationship originally enjoyed between God and humanity (Isaiah 59:1-2). It is deceptive (Romans 7:11), full of lies (1 John 1:6). It is aggressive (1 Peter 5:8), never satisfied to “live and let live,” demanding, instead, that we accept defilement as unavoidable and irreversible (Jude 1:23) and grow to both tolerate it (1 Corinthians 5:2, 6) and, finally, approve of it (Romans 1:32). It can be overwhelming (Galatians 6:1). It is NOT, however, hopeless!
In His correction of Cain, God tells him to be ever wary of the potential of sin (1 Corinthians 10:12). He does not claim our immunity to sin (Romans 3:23) but explains the desire of sin: Satan and his minions want “you.” Satan is not concerned with a one-time slip-up; he desires a complete take-over, an inundation from which there is no escape (cf. Romans 1:28; 1 Timothy 4:2).
A Christian, pure through the blood of Christ, is free of sin (1 John 1:7) but is not fooled by the prospect of immunity from sin (1 John 1:8). Rather, we understand the constant battle we must fight against it (Romans 7:23) and that we CAN overcome it (Romans 12:21). God tells Cain (and us): “rule over it.”