1 Corinthians 9:22
              To the weak became I as weak, that I might gain the weak: I am made all things to all men, that I might by all means save some. 
           
                
              1 Corinthians 9:27
              But I keep under my body, and bring it into subjection: lest that by any means, when I have preached to others, I myself should be a castaway.