One is struck in the study of saints, angels, and gods by a pattern that seems quaint and harmless, yet it is so common that I know there must be a deeper meaning. There always seem to be guardians and spirits of doors, bridges, exits, and entranceways. I saw it all over Asia, read about in Egypt and Mesopotamia, and am familiar with it in Greek mythology, guardian angels, and Catholic saints like St. John Nepomuk, St. Christopher, and even St. Peter. What is going on here?
