Commentaries:
Does this contradict Paul's poverty of spirit in I Timothy 1:12-15? No, before conversion Paul was a great deal like Simon the Pharisee in Luke 7. He was clothed in respectability, but he knew he was guilty of many deeds and attitudes for which Jesus denounced the Pharisees. In Philippians 3, he is instead looking back on what he thought of himself then. However, as God called him, he came to see himself through God's eyes as a man struggling with sin but rescued from it through Jesus Christ, which he describes in Romans 7. He then became a man whose faith was in God's grace, and he responded with zealous work largely out of a deep sense of grateful obligation.
Paul was full of wonder and gratitude when he remembered what Christ had done and continued to do through and for him. G.K. Chesterton, an atheist who converted to Catholicism, commented regarding this circumstance, "It is the highest and holiest of paradoxes that the man who really knows he cannot pay his debt will be forever paying it."
John W. Ritenbaugh
An Unpayable Debt and Obligation
Other Forerunner Commentary entries containing Philippians 3:6:
Matthew 5:10