The Confidence To Continue

In 2 Corinthians, Chapter 3, verses 17-18 and Chapter 4, verse 1, the Apostle Paul identifies the basis of his motivation and confidence in ministry.  What was it that fanned the flames of his confidence and gave him the courage to continue even when he faced daunting and almost unsurmountable odds?  He shares the secret with us in a letter to a church he founded but that was full of naysayers who criticized and condemned his ministry and questioned his credentials as an apostle of the Gospel.  His explanation encourages us when we are tempted to surrender, walk away or quit.