Conscience is not a separate moral faculty, but the function of the mind discriminating between right and wrong. While God speaks to us through this moral sense, conscience does not tell us what is right. We do not possess within ourselves the ability to discover or learn what our moral responsibilities are. Conscience cannot discover what is right and wrong. This we get from God and from His moral law.
Men often assume that the dictate of conscience is the moral standard by which to live.
This is a dangerous error, for men may not develop a good conscience but a depraved, weak, seared one. Then the conscience renders false moral judgments or no judgment at all. God requires that we take our moral standard from Him and not from ourselves. We are to judge the moral situations and acts of men from the immaculate purity and righteousness of God's character, the holiness of His law, and in the light of Jesus Christ. Every moral act and response becomes significant when illuminated by the revealed truth of God.