The Greco-Roman world was one of multi-aspected Paganisms, with their consciousness of myriad gods and goddesses, daimons and spirits. In that world the Hebrew-Israelite-Judaean tradition struggled to assert itself-and ultimately split into what became Judaism and Christianity. Verbal distinctions that we take for granted-such as those between magic and religion, myth and theology, superstition, heresy and true belief, astronomy and astrology-had...