Cain's downfall

"If you do what is right, will you not be accepted? But if you do not do what is right, sin is crouching at your door; it desires to have you, but you must master it." - Genesis 4:7

Cain's biggest problem was not that he did not present an offering that pleased God, but that he allowed this rejection of his actions to cause him to become downhearted, instead of using it as a wake up call to change his ways. Cain could have repented, and found favor with God. Instead, he let his anger take over. Yet God did not give up on him. Even though Cain turned his back on God, God promised to grant him protection (Genesis 4:15). This is a great demonstration of God's love for all of us, even those who reject Him and refuse to acknowledge who He is.