Tertullian

“ Then, turning His subject to their reflections, because He perceived that they were going to be scattered from Him, He says: “The flesh profiteth nothing.” Now what is there to destroy the resurrection of the flesh? As if there might not reasonably enough be something which, although it “profiteth nothing” itself, might yet be capable of being profited by something else. The spirit “profiteth,” for it imparts life. The flesh profiteth nothing, for it is subject to death. ”