Are You A Friggatriskaidekaphobe?
A friggatriskaidekaphobe (one of the Germanic pagan gods was Frigg, or Freyja, pronounced fry-yah, after which they named Freyja Day, from which comes the English Friday - see Sun Day, Moon Day, Tiw's Day) is someone who suffers from paraskevidekatriaphobia, defined as "a morbid, irrational fear of Friday the 13th."
Ironically, for some of them, "Friday the 13th" may indeed be a self-inflicted "unlucky day" because they do things that they would not otherwise do, in ways that are not rational (like someone who worries that they are going to get sick - the worry makes them sick). They thereby invite problems and trouble on that day. If they behaved normally, the day would also be normal - with whatever good or bad would have happened.
What About The Bible?
There have been numerous opinions about how the Friday the 13th "unlucky day" idea originated. All of them are based on paganism, witchcraft and Satanism - not the Word of God. Friday the 13th on the Roman Calendar (see Pope Gregory's Calendar) that is used through much of the world today has no date connection to God's calendar of the Bible (see Bible Calendar, Bible Months and Do We Have The Original Calendar?). Despite that reality, some have invented a number of non-existent "Friday the 13th" events in the Holy Bible.
Myth: Eve gave the apple to Adam on Friday
Myth: The great flood began on a Friday
Myth: The Temple of Solomon was destroyed on a Friday
Myth: Execution day was Friday in Rome
Myth: Jesus Christ was crucified on Friday the 13th
Fact Finder: How can we be absolutely sure that Jesus Christ was not crucified on Friday the 13th?