I had gotten a word of knowledge for a left knee problem. nobody had one but then a man walks in the shop. he has the problem. I said to him, "I'll bet you've heard about a lot of healing miracles, but you've never seen one, right?" He agreed. we prayed and a knee problem he'd had for 40 years was healed. I was then able to encourage him in his Christian faith. His "theoretical faith" became real.