I heard a story about a missionary working among children in the Middle East who was driving her jeep down a road when she ran out of petrol. She had no jerry can in her car. All she could find was a potty. She walked a mile down the road to the nearest petrol station and filled the potty with petrol. As she was pouring the petrol into the tank, a large black limousine drew up alongside with two wealthy oil sheikhs in it. They were absolutely fascinated at seeing her pouring the contents of the potty into the jeep. One of them opened the window and said, ‘Excuse me! My friend and I, although we do not share your religion, we greatly admire your faith!’
Quoted by Nicky Gumbel in Alpha Questions of Life, 2007 edition, Eastbourne: Kingsway Communications, p.21