life he would seek to be as discerning as possible. Yet, as George Duncan has said, “It is a strange fact about life that many people who are careful and explicit and exact in almost every department of their lives are at the same time, when it comes to spiritual things, content with vague uncertainties.”2 Duncan is right. As we have seen, that is the situation today. We shall consider the reason behind this strange phenomenon in the next chapter. For now we must content ourselves with an understanding