The Sign of the Cross is an ancient practice utilized by all apostolic churches. It is the "prayer of the hand", a liturgical action that mystically participates in the reality of the Life-Giving Cross of the Savior. By making use of the sign ancient Christians declared their fidelity to Christ, worked miracles, healed diseases and cast out demons. The Sign proclaims the Orthodox Christian faith and it demonstrates a piety with Christ and His Cross at its center.