All that is not the love of God has no meaning for me. I can truthfully say that I have no interest in anything but the love of God which is in Christ Jesus. If God wants it to, my life will be useful through my word and witness. If he wants it to, my life will bear fruit through my prayers and sacrifices. But the usefulness of my life is his concern, not mine. It would be indecent of me to worry about that.
