Many Protestant groups hold that repentance is one of the works of Grace and all man's strivings are void. It is sufficient that man casts himself at the feet of Christ to save him from his sins. The Orthodox doctrine holds that the whole spiritual life of man is a fellowship of the Holy Spirit. The Holy Spirit supports but man should strive. If man does not strive the Apostle will reproach him, saying: “You have not yet resisted to bloodshed, striving against sin” (Heb. 12: 4).