Think about the Holy Trinity and your head may start to hurt. Father, Son, Holy Spirit. Three persons, but only one God. It occurs to you that you do not know how to picture this three-and-one. Who is this mysterious being? How many of him are there? Do you imagine a single transcendent person so versatile that he can create, redeem, and cleanse like a fresh wind? Can he do these things simultaneously? Just one person who, so to say, wears three hats or plays three roles?