God: "I looked for someone to take a stand for me, and stand in the gap" (Ezekiel 22:30)
A person's life is his most precious possession. Consequently, to rob him of it is the greatest sin we can commit against him, while to give one's own life on his behalf is the greatest possible expression of love for him (1 Jn. 3:16). This, then, is the ultimate contrast: Cain's hatred issued in murder, Christ's love (issued) in self-sacrifice.
The conscience is at the core of what it means to be human, as opposed to being an animal. What distinguishes human beings and animals is self-consciousness; that is the ability of the soul to reflect upon itself. Humans are the only creatures in the material world who can think about their thoughts, who can contemplate why they think the way they think, who can understand their motives, who can make moral self-evaluations. And that is a God-given gift, the innate ability to sense what is right and wrong,
