Do you have one-liners that have been running for decades in your family, or with your friends? Those single quips come back with a laugh each time, don't they?
I share this because Paul may have one in 2 Corinthians 4:16a.
"That is why we never give up."
I imagine he shared this to a momentum-building crowd with the wryest, driest smile, or a spark in his eye.
Of course, we with faith and hope never give up. We can't! Paul saying the obvious is not just affirming, it's obvious in a good, solid, nothing's-gonna-shake-this way of his that is a good for a reason to smile.