“Therefore, do not lose heart. Though outwardly we are wasting away, yet inwardly we are being renewed day by day.” 2 Cor 4:16 (NIV)
“Wherefore we are not wearied, but though our outward man perish, yet the inward man is renewed day by day.” 2 Cor. 4:16 (Tyndale)
Some days (whether by some aches and pains or a lingering glance in the mirror) that “perishing” or “wasting away” of the outward man is more apparent than others. Those highlight the need to acknowledge the presence of that “inward man” and make sure and do what can be done to make sure that he “is renewed day by day.”