But to return to the Apostle, who himself, at ver. 16, returns to the beginning of the chapter, and resumes the οὐκ ἐγκακοῦμεν of ver. 1: "Wherefore we faint not." "Wherefore" means "With all that has been said in view"; not only the glorious future in which Paul and his disciples are to be raised and presented together to Christ, but his daily experience of the life of Jesus manifested in his mortal flesh. This kept him brave and strong. "We faint not; but though our outward man is decaying, yet our inward man is renewed day by day." The outward man covers the same area as "our body," or "our mortal flesh." It is human nature as it is constituted in this world--a weak, fragile, perishable thing. Paul could not mistake, and did not hide from himself, the effect which his apostolic work had upon him. He saw it was killing him. He was old long before the time. He was a sorely broken man at an age when many are in the fulness of their strength. The earthen vessel was visibly crumbling. Still, that was not the _whole_ of his experience. "The inward man is renewed day by day." The meaning of these words must be fixed mainly by the opposition in which they stand to οὐκ ἐγκακοῦμεν ("we faint not"). The same word (ἀνακαινοῦσθαι) is used of the renewal of the soul in the Creator's image (Col. iii. 10)--_i.e._, of the work of sanctification; but the opposition in question proves that this is not contemplated here. We must rather think of the daily supply of spiritual power for apostolic service--of the new strength and joy which were given to St. Paul every morning, in spite of the toils and sufferings which every day exhausted him. Of course we can say of all people, bad as well as good, "The outward man is decaying." Time tires the stoutest runner, crumbles the compactest wall. But we cannot say of all, "The inward man is renewed day by day." That is not the compensation of every one; it is the compensation of those whose outward man has decayed in Jesus' service, who have been worn out in labours for His sake. It is they, and they only, who have a life within which is independent of outward conditions, which sufferings and deaths cannot crush, and which never grows old. The decay of the outward man in the godless is a melancholy spectacle, for it is the decay of everything; in the Christian it does not touch that life which is hid with Christ in God, and which is in the soul itself a well of water springing up to life eternal.