16 Therefore we do not lose heart. Though outwardly we are wasting away, yet inwardly we are being renewed day by day. 17 For our light and momentary troubles are achieving for us an eternal glory that far outweighs them all.
Life is short, and also very busy. This busyness often detracts us from doing God’s work – making disciples and doing good. Paul assures us that the effor we put into eternal matters are never in vain. 🙂