Hebrew lettering is the main basis for Kabbalah tattoos, and these ancient letters are used to create designs with a variety of meanings. These days, Hebrew tattoos tend to get lumped into the same category as Kabbalah tats, although they can both be considered genres in their own right.
The Names of God
In Jewish tradition, the name of God is sacred. In fact, there are over 72 names for God. Some people believe that each separate name reveals a different kind of energy. Kabbalah tat enthusiasts tend to believe that they can harness some of that energy for themselves by having one of those names tattooed on their boby.
Another popular practice is to design tattoos that include Judaic scriptures that hold personal meaning to the bearer.
Numerical Significance
According to Jewish mysticism, each letter of the Hebrew alphabet has a number attached to it that gives it a certain value. This is vaguely similar to the art of numerology that is popular with New Age enthusiasts.