In the Calvinist tradition within Protestantism, there is a threefold idea involved in true repentance. The Protestant reformer John Calvin wrote that repentance "may be justly defined to be a true conversion of our life to God, proceeding from a serious fear of God, and consisting in the mortification of the flesh and of the old man, and in the vivification of the Spirit.” He further said that "it will be useful to amplify and explain the definition we have given; in which there are three points to be particularly considered".