QUOTE : When God approaches Cain after he rejects his sacrifice, God says this: “Why are you angry? And why has your countenance fallen? If you do well, will not your countenance be lifted up? And if you do not do well, sin is crouching at the door; and its desire is for you, but you must master it” (Gen. 4: 6–7). God does not take Cain’s point of view into account when he rejects his sacrifice. God does not reconsider his position because of Cain’s intentions. A sacrifice must bleed in order to count. This bedrock truth can only be apprehended through God’s point of view, not my own good intentions. So instead God rebukes Cain for pouting, and warns him that if he does not change, worse things are in store. God proclaims to Cain something vital about this enemy we call sin: it lurks at the entrance of your life, it knows you and desires you, it has a key to your heart and affections, and you must go to battle with it. Every day.