Common Superstitions: Knocking On Wood
This common superstition arises from Christian tradition. Churches around the world revere wood because it makes up the cross. By touching wood, one would ensure their own protection and happiness. Likewise, the church building is a sanctuary for whoever knocks on its wooden door.
Another story of this superstition’s origin comes from a time when people lived in wooden huts. The prosperous and healthy were afraid to speak of their good fortunes; envious, evil spirits could ruin and reverse it. When someone talked of their good fortune, they knocked loudly on the wooden walls to prevent any jealous eavesdroppers and spirits from hearing.