The Human Conscience

From Herman Bavinck in his Reformed Dogmatics, 3:173:

Before the fall, strictly speaking, there was no conscience in humans. There was no gap between what they were and what they knew they had to be. Being and self-consciousness were in harmony. But the fall produced separation. By the grace of God, humans still retain the consciousness that they ought to be different, that in all respects they must conform to God’s law. But reality witnesses otherwise; they are not who they ought to be. And this witness is the conscience. The conscience … is proof that communion with God has been broken, that there is a gap between God and us, between his law and our state. … The human conscience is the subjective proof of humanity’s fall, a witness to human guilt before the face of God.