Chambers questions if we feel the same sense of indebtedness to Christ that Paul did, concerning every unsaved soul. Paul was overwhelmed by it and spent himself expressing it. His view of Jesus Christ was that of a spiritual creditor and he was indebted. This inspired his desire to reach the lost. He wanted all to experience His overwhelming grace.
I relate to this because while I lay awaiting an ambulance, unsure if it would be my last day, the questions haunted me. "Who didn't I tell? Did I do enough?" I wasn't afraid. I just wondered if I had done all i could to complete that purpose. I didn't feel like I had.
It is not my job to 'save' anyone. However, the overwhelming indebtedness of the realization of what Jesus Christ has done for me inspires me to share Him with those who have yet to realize it. That gives my life purpose.
Every bit of my life that is of value, I owe to the Redemption of Jesus Christ; am I doing anything to enable Him to bring His Redemption into actual manifestation in other lives? I can only do it as the Spirit of God works in me this sense of indebtedness. ~ Oswald Chambers