Thomas Aquinas

“ Augustine says that the resurrection of souls is wrought by God's Substance, as to participation, because souls become good and just by sharing in the Divine goodness, but not by sharing in anything created. Accordingly, after saying that souls rise by the Divine Substance, he adds: the soul is beatified by a participation with God, and not by a participation with a holy soul. ”

“ Further, if Christ's Resurrection be the cause of the resurrection of our bodies, it would be either the exemplar, or the efficient, or the meritorious cause. Now it is not the exemplar cause; because it is God who will bring about the resurrection of our bodies, according to Jn. 5:21: "The Father raiseth up the dead": and God has no need to look at any exemplar cause outside Himself. In like manner it is not the efficient cause; because an efficient cause acts only through contact, whether spiritual or corporeal. ”

“ Because the principle of human life-giving is the Word of God, of whom it is said (Ps. 35:10) : "With Thee is the fountain of life": hence He Himself says (Jn. 5:21) : "As the Father raiseth up the dead, and giveth life; so the Son also giveth life to whom He will." ”