Gnosis is a cosmic teaching that aims to restore in each one of us the ability to live consciously and intelligently. One of the fundamental principles of Gnosis is that all Religions teach the same thing, they teach the Path to return to God (the Authentic Path of Initiation). And this path is present in the Kabalah and in the Tarot plates as well. God, for the Gnostic, is something which exists within, that every human being can connect with and access if they learn the methods to do so.
Something that we need to understand is that Kabalah and Tarot cards are not a game. They are a Symbolic representation of the Cosmic Science (the Science of the Union with God) which allows us to grasp the universe and our place in it. The Cosmic Science teaches us the path which will end all suffering. When we apply this Science to our lives, we can escape the laws of Evolution and become something like a Super-Man or Super-Woman.
But in order to do this, we must be serious about the work that is necessary on the Path to return to God (the Path of Authentic Initiation). This work is synthesized into the 3 Factors or the 3 Keys of the Revolution of the Consciousness: Death, Birth and Sacrifice.