Did Cain really not know? His mind was filled with jealousy and anger, so he did not just kill his younger brother with his bare hands, he rudely lied to God and said he didn’t know. And so God punished him, driving from his home, never to see him again. At this time, Cain had a moment of clarity and begged for forgiveness. He realized that his sin had caused his relationship with God to fracture and break!