The conscience entreats you to do what you believe is right and restrains you from doing what you believe is wrong. But don’t equate the conscience with the voice of God or the law of God. It is a human faculty that judges your actions and thoughts by the light of the highest standard you perceive. When you violate your conscience, it condemns you, triggering feelings of shame, anguish, regret, consternation, anxiety, disgrace, and even fear. Conversely, when you follow your conscience, it commends you, bringing joy, serenity, self-respect, well-being, and gladness.
John MacArthur