The Two Primal Fears
The superstition isn't one idea; it's two separate anxieties that merged over time. Long before they were combined, both the number 13 and the day Friday had their own bad reputations. The fear of 13, known as triskaidekaphobia, has deep roots in both mythology
and religion. In Norse mythology, a dinner party of 12 gods was crashed by the mischievous Loki, the 13th guest, which led to the death of the god Balder. This story established the concept of 13 at a table being a terrible omen. A similar fear is present in Christian tradition, stemming from the Last Supper, where Judas, the apostle who would betray Jesus, was the 13th individual to join the table.
What's Wrong With Friday?
Friday’s unlucky reputation is also well-established in Western culture. For Christians, it’s the day of the week that Jesus was crucified, an event known as Good Friday. Some biblical scholars have also suggested that other unfortunate events, like Cain killing Abel, happened on a Friday. Since at least the 14th century, as noted in Geoffrey Chaucer's "The Canterbury Tales," Friday has been considered an inauspicious day to start a new project or embark on a journey. Some historians also theorize that as Christianity spread, it sought to suppress pagan traditions. Friday, associated with the Norse goddess Frigg or the Roman goddess Venus, was reframed from a day of love and fertility into something to be distrusted.
The Knights Templar: A Great Story, But Is It True?
One of the most popular origin stories links the superstition to the downfall of the Knights Templar. On Friday, October 13, 1307, King Philip IV of France, who was deeply in debt to the order, ordered the mass arrest of its members on charges of heresy. Many were tortured and executed. It's a dramatic and compelling tale that neatly ties the day and date together. However, most historians now believe this is a modern connection. While the arrests did happen on that date, the specific association of Friday the 13th with bad luck doesn't appear in documented sources until centuries later. The popularity of this theory surged in the 21st century, partly thanks to its inclusion in Dan Brown's novel The Da Vinci Code.
So When Did It Actually Start?
The fusion of an unlucky day and an unlucky number into one specific, dreaded date is surprisingly modern. Most evidence suggests the superstition didn't become widespread until the late 19th and early 20th centuries. There's no clear record of it being a known phenomenon before then. The first documented mention appears in the biography of Italian composer Gioachino Rossini, who died on Friday, November 13, 1868. The idea was further cemented in popular culture by Thomas W. Lawson's 1907 novel, Friday, the Thirteenth, where a stockbroker uses the superstition to create a panic on Wall Street. It was these more recent cultural touchstones, not an ancient, unbroken line of fear, that truly solidified Friday the 13th in the American consciousness long before Jason Voorhees ever picked up a machete.
