Friday the 13th: The Jewish Origin of 'Knock on Wood'

Thinking about Friday the 13th? Let’s talk about Jewish superstitions. Many Jews knock on wood to ensure a positive outcome – and for good reason! During the Spanish Inquisition, secret codes were devised to allow Jews entry to synagogues (which happened to be made of wood), thus saving many lives. And so began the tradition that some would call a superstition!