And I will very gladly spend and be spent for you; though the more abundantly I love you, the less I be loved.  2 Corinthians 12:15

Natural human love expects something in return. But Paul is saying, “It doesn’t really matter to me whether you love me or not. I am willing to be completely destitute anyway; willing to be poverty-stricken, not just for your sakes, but also that I may be able to get you to God.” “ For ye know the grace of our Lord Jesus Christ, that, though he was rich, yet for your sakes he became poor,…” (2 Corinthians 8:9). And Paul’s idea of service was the same as our Lord’s. He did not care how high the cost was to himself— he would gladly pay it. It was a joyful thing to Paul. The institutional church’s idea of a servant of God is not at all like Jesus Christ’s idea. His idea is that we serve Him by being the servants of others. Jesus Christ actually “out-socialized” the socialists. He said that in His kingdom the greatest one would be the servant of all (see Matthew 23:11). The real test of a saint is not one’s willingness to preach the gospel, but one’s willingness to do something like washing the disciples’ feet— that is, being willing to do those things that seem unimportant in human estimation but count as everything to God.  Oswald Chambers, My Utmost for His Highest