That One Thing

As quoted by Mike Bullmore at The Gospel Coalition Canada Conference yesterday:

When a man, by constant contemplation of the Passion and Resurrection of our Lord, finds himself so inflamed with the love of God and man that he cannot bear the thought of any man living and dying without the knowledge of God, he may begin to bear the Cross of Christ. If, as he bears it, this longing for the salvation of all men fills all his thoughts and desires, then he has that one thing without which no man can truly be a messenger of Jesus Christ. (Stephen Neill, quoted in The Gagging of God)