Nicene and Post-Nicene Fathers, Ser. II, Vol. III:
Life and Works of Rufinus with Jerome's Apology Against Rufinus.: The resurrection body is a spiritual body.

9. I have made answer more at length than I had intended on this single article of the resurrection, through fear lest by brevity I should lay myself open to fresh aspersions. Consequently, I have made mention again and again not only of the body. as to which cavils are raised, but of the flesh: and not only of the flesh; I have added “this flesh;” and further I have spoken not only of “this p. 439 flesh” but of “this natural flesh;” I have not even stopped here, but have asserted that not even the completeness of the several members would be lacking. I have only demanded that it should be held as part of the faith that, according to the words of the Apostle, it should rise incorruptible instead of corruptible, glorious in stead of dishonoured, immortal instead of frail, spiritual instead of natural; and that we should think of the members of the spiritual body as being without taint of corruption or of frailty. I have set forth my faith in reference to the Trinity, the Incarnation of the Lord our Saviour, to his Passion and Resurrection, his second coming and the judgment to come. I have also set it forth in the matter of the resurrection of our flesh, and have left nothing, I think, in ambiguity. Nothing in my opinion remains to be said, so far as the faith is concerned.