Have you ever gone to the furniture store to buy a chair without sitting in it? Have you ever purchased a car without test-driving it? Of course not, and God also tests us to reveal the quality of our faith. No matter what we think of ourselves, we find out what we are truly like in times of difficulty. Good times don't bring the worst out of us, but hard times do. That is why God says these difficult times are good for us. They allow us to see what is in our character that needs to be changed. They also give us opportunity to use our faith, and faith only grows through our using it. As we choose to learn to trust God instead of getting upset about something, we experience His faithfulness, which, in turn, increases our faith for the next time we need it. The more we use our muscles, the more they grow--and our faith is the same way.