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Tridecaphobia - The fear and phobia for the number thirteen 13

Why are we afraid of the number 13 and the Friday the 13:th?

In the Bible the numbers 7, 12 and 40 have symbolic meaning and appear throughout the Old and New Testaments. The number 12 is considered a lucky number. Consequently, the number, which follows 12, was thought to be evil. The number 13, in the Christian faith, is the number of parties at the Last Supper, with the 13th guest at the table being the traitor, Judas. When Christians combine this day and number, the combination can only hold special significance.

Known scientifically as "Tridecaphobia," fear of the number 13 is probably the most common of all superstitions. Buildings avoid numbering the 13th floor. Airplanes avoid the 13th aisle. And almost every North American knows that Friday the 13th is considered a bad luck day.


 For most folks, Friday the thirteenth is considered the unluckiest of days, unless you were born on Friday the 13. If you were born on this day then Friday the 13 is your lucky day. 
The origins of Friday superstitions are many. One of the best known is that Eve tempted Adam with the apple on a Friday. Tradition also has it that the Flood in the Bible, the confusion at the Tower of Babel, and the death of Jesus Christ all took place on Friday.
The modern basis for the Friday the 13th superstition stems from Friday October the 13th, 1307. On this date, the Pope of the church in Rome in Conjunction with the King of France, carried out a secret death warrant against "the Knights Templar". The Templars were terminated as heretics, never again to hold the power that they had held for so long. There Grand Master, Jacques DeMolay, was arrested and before he was killed, was tortured and crucified. A Black Friday indeed!
Long before the Bible was written, Friday was considered an important day. Primitive people set aside Fridays as a special time to worship their deities and ask them for good crops, health and happiness. Those who worked on this day were told not to expect "good luck" from the gods.


The day Friday was named after Frigg (or Frigga), the Norse goddess of marriage. Later she was confused with the goddess of love, Freya, who in turn became identified with Friday. When the Norsemen and Germanic tribes became Christians, Freya was supposed to have been banished to the mountains as a witch. 
Friday came to be called "witches' Sabbath." For it was believed that on this day, each week, twelve witches and the Devil met - thirteen evil spirits up to no good! This is one of the reasons for today's superstition about Friday the 13th.

 

The Scandinavian belief that the number 13 signified bad luck sprang from their mythological 12 demigods, who were joined by a 13th demigod, Loki, an evil cruel one, who brought upon humans great misfortune.