For Christ is the end of the law for righteousness to everyone who believes. If you confess with your mouth, “Jesus is Lord,” and believe in your heart that God raised Him from the dead, you will be saved. One believes with the heart, resulting in righteousness, and one confesses with the mouth, resulting in salvation. Romans 10:4, 9-10 HCSB
The Law of the Old Testament is taken away by the payment of the Lamb for those who do two things: truly believe is WHO Christ is and what He did; and to confess the glory and majesty of Jesus out loud to all who will listen. We must not only truly believe, we must confess what we believe to all and live as Christ directs us.