It is an interesting thing that Paul describes the bodily resurrection in glowing terms but in this passage, he speaks about the fact that even now we are being renewed. While on the one hand the body is wasting away, yet in another sense the body is being renewed day by day.
Though outwardly we are wasting away, yet inwardly we are being renewed day by day. (2 Cor. 4:16).
Now, when Paul talks about being renewed day by day. What do you think Paul is talking about? We all know or can guess at the wasting away part but do we also know this renewal day by day? The truth is that it isn’t so obvious and sadly many people become bitter and judgemental as they become older.