According to the kabbalistic doctrine, matter does not exist by itself. As soon the Holy letters are pronounced by the mouth of God, at once they join in groups, materialize and become the object representing that word. Thus, there is no distinction between a word and the object itself it represents, contrary to the other languages, which are mere conventions to indicate an object but are not the object itself. There is a tradition that, whoever can pronounce the holy letters correctly, can perform great things in the world. The Book of Formation examines each letter in the Holy Language (Hebrew), its attributes, and character. With the Lurianic commentaries, this edition is the most complete nowadays.