Dr. Howard A. Kelly was in the habit of wearing a button with a question mark on it. He bought them and has given them out by the hundreds. He used it as a springboard to talk about Christ. A stranger would ask, “What does that question mark mean, Dr. Kelly?” He replied, “What is the greatest thing in the world?”
Knowing that they are speaking to a physician, some reply, “Health is the greatest thing.” Others in answer to the inquiry say, “Money.” “No,” Kelly would reply, “the biggest question in the world is: “What do you think of Jesus?” Then he would proceed to speak for Jesus. He was busy caring for his patients in the hospital, but was never too busy to speak a word for Jesus.
Jesus said, “you will be my witnesses…to the ends of the earth.”