A biblio-ecclesiastical term; which denotes the transforming of the sinner from the state of unrighteousness to the state of holiness and sonship of God. Considered as an act (actus justificationis), justification is the work of God alone, presupposing, however, on the part of the adult the process of justification and the cooperation of his free will with God's preventing and helping grace (gratia praeveniens et cooperans). Considered as a state or habit (habitus justificationis), it denotes the continued possession of a quality inherent in the soul, which theologians aptly term sanctifying grace. Since the sixteenth century great differences have existed between Protestants and Catholics regarding the true nature of justification. As the dogmatic side of the controversy has been fully explained in the article on GRACE, we shall here consider it more from an historical point of view.
From:
www.newadvent.org/cathen/08573a.htm
