2 Corinthians 4:16

For this reason. 2 Corinthians 4:15. Our physical being. Paul's service to Christ cost him something in physical strength (2 Corinthians 1:8; 2 Corinthians 11:23-28). Yet our spiritual being. This is the part of every person that is morally responsible. See Romans 7:20; Romans 7:23; Ephesians 3:16. Probably Paul is not thinking about progressive spiritual growth, but the fact that even though his physical strength is being drained away, his spiritual strength is renewed day after day!

17,

And this. "Besides, we can endure this small and temporary trouble! What does it amount to, when you compare it with the tremendous and eternal glory which this suffering will bring us!" Salvation is seized, not achieved!