It is possible to throw our lives away foolishly by burning the candle at both ends. When Robert Murray McCheyne, only thirty years old, lay dying, he said to a friend at his bedside, "God gave me a message to deliver and a horse to ride. Alas, I killed the horse, and now I cannot deliver the message." The horse was, of course, his body. Christian workers should accept it that their service will be costly if it is to be effective, but they should be careful not to kill the horse.