Tetragrammaton
Yod he vavh - the Sacred name – there is a longer secret - 72 letter name
Golem of Prague
This clay creature was supposedly created by a rabbi of the Prague who wrote truth on its forehead
Tree of life
There are 22 paths between the sfirot
Issac luria
Revised the Kabbalah in the 16th century in Galilee , provided Judaism with a new form of theodicy
Was one of the key influence of he rabbi/prophet Nathan of gaza
Gematria
Is numeric value for each Hebrew letter
A sum is made for the word or phrase