Black Eyed Sceva
This story is comical and amazingly powerful at the same time. I think its hilarious how the evil spirit just decimated these 7 guys who were using Jesus' name as some sort of tinker toy power tool. Then we are told what happened immediately after this... the hearts of the people were revealed as well. They had all been treating His name in the same way. They all made little of him as if the could wield the power of the Holy Spirit anytime they wanted to accomplish their goals and glory. At this event it says they were seized with fear, because they were all thinking the same as these 7 sons. When they realized the power they were up against and that Jesus' name was really the only thing powerful enough to defeat it, they began to genuinely believe and cling to the truth of who Christ was. He wasn't just another trinket for them to throw in their purse and pull out to bring about some glory and recognition for themselves. He was the real deal, and the only thing that could save them from the power of evil and deliver them from their sin.