II. Agility. The soul that shall enjoy the vision of God, being conjoined to its last end, will find its desire fulfilled in all things. And because the body moves at the desire of the soul, the body in this case will absolutely obey the beck of the spirit in its every command to move: hence the bodies of the risen will be agile; and this is what the Apostle means, when he says: It is sown in weakness: it shall rise in power (ib.) We experience weakness in the body, in that it proves incapable of satisfying the soul in the movements and actions which the soul commands. This weakness shall then be entirely removed by virtue overflowing into the body from the soul united to God. Hence it is said of the just that they shall run hither and thither like sparks in a dry bed of reeds (Wisd. iii, 7).
III. Impassibility. As the soul that enjoys God will have its desire fulfilled in respect of the gaining of all good, so also in respect of the removal of all evil. The body therefore, being made perfect in proportion to the soul, shall be free from all evil, actual and potential. As for actuality, there will be in the risen no corruption, no deformity, no defect. In point of potentiality, the risen Saints will be beyond the possibility of suffering aught that could give them pain: they will thus be impassible. Still this does not bar in them that sensibility which is proper to sentient beings: for they will use the senses to their delight in things that are not inconsistent with their state of incorruption. This impassibility is declared by the Apostle: It is sown in corruption, it shall rise in incorruption.
IV. Subtlety.* As the soul enjoying God shall perfectly adhere to Him, and share in His goodness to the full height of its capacity; so the body shall be perfectly subject to the soul, and share in its attributes so far as possible, in clearness of sense, in seemliness of bodily appetite, and in general perfection of the entire organism: for a natural object is more perfect, the more perfectly its matter is subject to its form. Therefore the Apostle says (1 Cor. xv, 44): There is sown an animal body, there shall rise a spiritual body. The risen body will be spiritual, not as being a spirit, but as being wholly subject to the spirit; as the present body is called animal, not because it is an animal,* but because it is subject to animal appetites and needs food.
It appears by what has been said that the risen body shall be bright and shining, incapable of suffering, moving without difficulty and labour, and most perfectly actuated by its form.
4.85 : That the Bodies of the Risen shall be otherwise organised than before
4.88 : Of Sex and Age in the Resurrection