our ability is limited to the observation of external modes of behavior. God can perceive the heart; God alone knows the deepest motives and intentions that undergird our practice and behavior. Legalism is concerned simply with external conformity and is blind to internal motivation. Perhaps the most deadly and widespread form of legalism is the type that adds legislation to the law of God and treats the addition as if it were divine law. The Old Testament prophets expressed God’s fury at this form