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George D. Smith
The application of all this to the question of sanctifying grace will be seen more and more as we proceed, but for the present we simply assert the magnificent truth that grace is not only a positive reality in the soul, not only a reality which no created being could produce, but a reality which in itself is higher than the whole order of created things (even angelic) and is truly divine. This brings us at once to a wonderful phrase of St Peter, who says that we are made “partakers of the divine nature.” Catholic theology has ever clung to the belief that here we have no mere figure of speech but the declaration of a definite fact. We really are made to be partakers of the divine nature. It is not merely that our spiritual faculties of intellect and will establish a special likeness to God in our souls; that is true enough, but over and above this natural likeness to God a wholly supernatural quality is given to us which makes us to be of the same nature as God…St Augustine puts the matter thus: He descended that we might ascend, and “whilst retaining his own divine nature he partook of our human nature, that we whilst keeping our own nature, might become partakers of his.” St Thomas Aquinas, echoing the constant teaching of the past, declares in a passage which the Church uses for the feast of Corpus Christi: “the only-begotten Son of God, wishing to make us partakers of his own divinity, took upon himself our human nature that having become man he might make men to be gods.” And we know how the Church has enshrined this wonderful truth in one of the most beautiful of the prayers at Mass. “O God, who in creating human nature, didst marvellously ennoble it, and hast still more marvellously renewed it, grant that by the mysery of this water and wine we may be made partakers of his Godhead, who vouchsafed to become partaker of our humanity, Jesus Christ, thy Son, our Lord.” (The Teaching of the Catholic Church, edited by Canon George D. Smith, 1960, volume 1, pp. 553, 554.)
Both St John and St Paul exult in proclaiming this act of divine condescension. “Dearly beloved,” the first writes with all the earnestness of the disciple of love, “we are now the sons of God: and it hath not yet appeared what we shall be. We know that when he shall appear we shall be like to him: because we shall see him as he is. And everyone that hath this hope in him sanctifieth himself.”…In light of such luminous teaching it is clear that is in a very special sense that we are children of God…Sanctifying grace, as we have seen, is a positive reality infused into the soul by which we are made to share the divine life…By sanctifying grace the very life of God is imparted unto them. (Ibid. pp. 556, 557.)
John Paul II
This is the central truth of all Christian soteriology that finds an organic unity with the revealed reality of the God-Man. God became man that man could truly participate in the life of God—so that, indeed, in a certain sense, he could become God. The Fathers of the Church had a clear consciousness of this fact. It is sufficient to recall St. Irenaeus who, in his exhortations to imitate Christ, the only sure teacher, declared: “Through the immense love he bore, he became what we are, thereby affording us the opportunity of becoming what he is.” (John Paul II, Jesus, Son and Savior, 1996, p. 215 - General audience address September 2, 1987.)
CCC
The Word became flesh to make us “partakers of the divine nature”: “For this is why the Word became man, and the Son of God became the Son of man: so that man, by entering into communion with the Word and thus receiving divine sonship, might become a son of God.” “For the Son of God became man so that we might become God.” “The only-begotten Son of God, wanting to make us sharers in his divinity, assumed our nature, so that he, made man, might make men gods.” (Catechism of the Catholic Church, 1994 edition, p. 116.)