"drive bys"

yesterday we saw a couple of "drive by" healings - O.K, so we weren't in the car, but as we were leaving this bookstore, I asked the manager why she hadn't read any of Bill Johnson's books? she carried a few titles, but hadn't read any. she acted a bit embarrased (probably because I'd talked with her so much about his stuff previously). Anyway, at that moment a word of knowledge comes (lower abdomen on the side). Both she and her friend have pain in that area - my wife laid her hands on each of them and the pain left! I said, "we learned that from Bill Johnson"! Then she asks, "which one of his books should I start with"?