Although it has moved into popular culture, many people are not aware of the fact that the Kabbalah is actually a Jewish book of Numerology.
Now, I like to consult the Kabbalah before making any major decisions, just to see what wisdom it holds for me.
For example, there was the time that my wife and I needed to buy a new clothes dryer. We were confused about brands, features, etc. So I consulted my trusty Kaballah and it advised:
6, 13, 22, 31, 50.