James 2:19-20
You believe that God is one; you do well (to believe that). The demons also believe (that), and shudder and bristle (in awe-filled terror- they have seen His wrath)! But are you willing to recognize you foolish (spiritually shallow) person, that Faith without (good) works is useless.
We need to build spiritual muscle. The kind of muscle that speaks Faith during the tough times and the good times. Where we are practicing our Faith, walking our Faith, and talking about our Faith, our goal is the kind of Christian to please God in Faith and never be called a foolish (shallow) person.