C.S. Lewis used to say that the best evidence of what a person is like is what they do when they are off their guard. ‘Like rats in a cellar, you are most likely to see them if you go in suddenly. But the suddenness doesn’t create the rats; it only prevents them from hiding. Similarly, it’s not the suddenness of a provocation that makes me ill-tempered; it only shows me what an ill-tempered man I am.’ That’s¬ why Good Housekeeping magazine used to advise prospective brides to find out what the men wanting to marry them were really like by watching them drive in heavy traffic, listening to them talk when their mothers weren’t around, or just playing golf with them. Our biggest problems in life come not from what happens to us, but from what is within us. That’s why we need to be renewed from within, and only Jesus can do it for us.